Table of Contents
Imagine walking into your home after a long day, and the lights gently awaken to a warm, inviting glow perfectly tailored to your mood. No fumbling for switches, no harsh overhead blasts—just seamless, intuitive illumination that feels like it reads your mind. This isn’t science fiction; it’s the reality smart lighting delivers today, and Zigbee technology remains the quiet powerhouse making it all possible. As we move deeper into 2026, the smart home ecosystem has matured, but the foundational need for reliable, responsive, and truly independent lighting control has only grown sharper. Zigbee bulbs, operating on their own dedicated mesh network, cut through the clutter of Wi-Fi congestion and Bluetooth limitations, offering the stability that turns smart home promises into everyday magic.
Why does Zigbee continue to dominate the smart lighting scene when newer protocols emerge? It boils down to resilience. Unlike solutions hogging your home Wi-Fi bandwidth—causing lag during video calls or buffering streams—Zigbee creates a separate, low-power network where bulbs talk directly to each other and a central hub. This mesh architecture means every compatible bulb you add actually strengthens the signal, eliminating dead zones in sprawling homes or multi-story layouts. For homeowners craving a system that just works, especially when the internet stutters or the main router reboots, Zigbee’s local processing ensures your lights stay responsive. It’s the difference between a smart home that feels fragile and one that feels truly integrated into the fabric of daily life—reliable enough to become invisible in the best way possible.
Top 10 Zigbee Light Bulbs
Detailed Product Reviews
1. THIRDREALITY Zigbee Smart Color Bulb ZL1 4Pack,Compatible with Home Assistant(ZHA&Z2M), SmartThings,Aeotec,Homey,Hubitat or Echo Devices With Built-in Hub,A19 RGBCW Bulb,2700K-6500K Tunable,800 Lumens
Overview:
This 4-pack of Zigbee 3.0 RGB+CCT bulbs offers full-color customization and tunable white lighting (2700K–6500K) for smart home setups. Requiring a compatible hub like Echo Studio or Home Assistant, it targets users prioritizing network stability and broad ecosystem integration.
What Makes It Stand Out:
The standout feature is its dual role as a Zigbee repeater, boosting mesh network range to eliminate dead zones—a rarity in budget bulbs. It also supports millions of colors, precise 1%–100% dimming, and seamless compatibility with niche platforms like ZHA/Z2M, appealing to advanced smart home enthusiasts.
Value for Money:
Priced competitively for a 4-pack, it outperforms single-color Zigbee alternatives by delivering full RGB+W capabilities at a similar cost. While requiring a hub (sold separately), the energy efficiency and repeater functionality offset long-term expenses, making it ideal for expanding existing Zigbee networks.
Strengths and Weaknesses:
Strengths: Exceptional network-strengthening repeater feature; broad compatibility (including open-source hubs); vibrant color accuracy; energy-efficient.
Weaknesses: Hub dependency adds setup complexity; no native Wi-Fi option limits standalone use.
Bottom Line:
A top pick for Zigbee-centric homes needing color versatility and network resilience. Recommended for tech-savvy users, though beginners may find the hub requirement daunting.
2. Sengled Smart Light Bulbs, Zigbee Hub Required, Works with Alexa and SmartThings, Voice Control with Google Home and Echo with built-in Hub, Soft White 60W Equivalent A19 Dimmable Smart Bulbs, 4-Pack
Overview:
This 4-pack of soft-white (2700K) dimmable bulbs uses Zigbee for stable, low-latency control via hubs like SmartThings or Echo Plus. Designed for effortless voice automation, it focuses on reliability for everyday ambient lighting without color options.
What Makes It Stand Out:
Its pure Zigbee protocol ensures rock-solid connections (unlike Wi-Fi bulbs prone to dropouts), and the ability to group 64+ bulbs makes it ideal for large-scale deployments. The plug-and-play setup with major ecosystems and Ethernet-connected hub stability set it apart for no-fuss operation.
Value for Money:
The 4-pack delivers excellent value for white-only lighting, saving 80% energy versus incandescents. While cheaper than color bulbs, it lacks versatility—best for users prioritizing simplicity over customization. Competes well with basic Philips Hue whites but at a lower entry price.
Strengths and Weaknesses:
Strengths: Unbeatable stability for white lighting; effortless voice/group control; energy-efficient; scalable to 64 bulbs.
Weaknesses: No color tuning; hub sold separately; limited to soft white (non-tunable).
Bottom Line:
Perfect for budget-conscious users seeking reliable, hands-free white lighting. Avoid if you want color effects, but highly recommended for straightforward smart ambiance.
3. Sengled Zigbee Smart Light Bulbs, Smart Hub Required, Works with SmartThings and Echo with built-in Hub, Voice Control with Alexa and Google Home, Soft White 60W Eqv. A19 Alexa Light Bulb, 8 Pack
Overview:
An 8-pack variant of Sengled’s soft-white dimmable bulbs, optimized for whole-home coverage. It shares core features with Product 2 but offers double the bulbs at a better per-unit cost, targeting users outfitting multiple rooms affordably.
What Makes It Stand Out:
The expanded 8-pack lowers the cost-per-bulb significantly while retaining all key strengths: military-grade Zigbee stability, 64-bulb grouping, and seamless Alexa/Google integration. The focus on volume makes it ideal for landlords or large households prioritizing uniform, maintenance-free lighting.
Value for Money:
This pack is the most economical Sengled option for white lighting, with savings amplifying when replacing entire home fixtures. Though the hub is extra, the 80% energy reduction and minimal failure rate justify the investment over cheaper Wi-Fi alternatives prone to disconnections.
Strengths and Weaknesses:
Strengths: Lowest cost per bulb in Sengled’s lineup; exceptional network reliability; simple voice scheduling; energy-efficient.
Weaknesses: No color or tunable white; hub required (not included); identical functionality to 4-pack limits novelty.
Bottom Line:
The go-to choice for bulk white lighting deployments. Recommended for cost-driven setups where color isn’t needed, but skip if you already own the 4-pack.
4. Philips Hue Essential Smart LED A19 Bulb, White and Color Ambiance, E26 Base, 8.8W, 2200K-6500K, 800 Lumens, Dimmable, Works with Alexa, Google, and Apple Home, 4-Pack
Overview:
Philips Hue’s 4-pack merges white ambiance (2200K–6500K) with 16 million colors in a hub-free starter kit. Using Bluetooth, it enables direct app/voice control without extra hardware, targeting users wanting premium color experiences with minimal setup.
What Makes It Stand Out:
Unlike competitors, it works natively with Alexa/Google/HomeKit out of the box via Bluetooth—no hub needed for core functions. The curated light scenes (e.g., “Concentrate” or “Relax”) and buttery-smooth dimming to 2% deliver a refined, user-friendly experience unmatched in its class.
Value for Money:
Priced higher than budget bulbs, it justifies cost through polish: superior color accuracy, Apple Home integration, and optional Hue Bridge expansion for geofencing. While not the cheapest, its reliability and ecosystem depth offer long-term value for Apple/Google-centric homes.
Strengths and Weaknesses:
Strengths: Hub-free Bluetooth convenience; best-in-class color quality; intuitive app; Apple HomeKit support.
Weaknesses: Higher upfront cost; limited range without Bridge; no Zigbee repeater functionality.
Bottom Line:
Worth the premium for hassle-free color lighting. Ideal for beginners or Apple users—skip only if you strictly need Zigbee or have a massive home requiring repeaters.
5. THIRDREALITY Smart Color Bulb ZL1,Zigbee hub Required,Compatible with Home Assistant(ZHA&Z2M),SmartThings,Aeotec,Homey,Hubitat or Echo Devices with Built-in Zigbee hub,A19 RGBCW Bulb,800 Lumens
Overview:
This single-unit THIRDREALITY bulb mirrors Product 1’s 4-pack features but sold individually, offering RGB+CCT flexibility for users testing or expanding Zigbee networks incrementally without bulk commitment.
What Makes It Stand Out:
Identical to Product 1, it excels as a Zigbee repeater—critical for extending mesh networks in signal-challenged areas. Its open-source hub compatibility (ZHA/Z2M) and 2700K–6500K tunability cater to DIY smart home builders seeking granular control at a fraction of Hue’s cost.
Value for Money:
As a standalone bulb, it’s perfect for targeted upgrades (e.g., a single room). Though pricier per unit than the 4-pack, it’s economical for sparse installations. Beats Wi-Fi bulbs in latency and saves energy, but the hub requirement narrows its appeal to existing Zigbee users.
Strengths and Weaknesses:
Strengths: Network-boosting repeater capability; full color/tunable white spectrum; open-source platform support.
Weaknesses: Hub dependency; no Wi-Fi fallback; dimming not as smooth as Hue.
Bottom Line:
A strategic buy for augmenting Zigbee setups. Choose the 4-pack for value, but this is ideal for single-bulb needs—recommended only if you already use Zigbee hubs.
6. innr Zigbee A19 Smart Bulb, Works with Hue*, Alexa, SmartThings, White & Color, 40% More Brightness, E26 LED Color Changing Light Bulb, Dimmable, 1100 Lumen, 4-Pack
Overview: The innr Zigbee A19 4-pack delivers high-performance smart lighting with exceptional brightness and seamless integration into existing Zigbee ecosystems like Philips Hue and SmartThings. Designed for users prioritizing illumination quality and system compatibility.
What Makes It Stand Out: Its standout feature is 40% higher brightness (1,100 lumens) than typical smart bulbs, significantly reducing eye strain for task lighting. The CRI >94 ensures true-to-life color accuracy, while smooth 1%-100% dimming and 16 million colors cater to both productivity and ambiance needs.
Value for Money: Priced mid-range for a 4-pack, it justifies cost through superior brightness and reliability within Zigbee networks. Though slightly pricier than basic white bulbs, the color versatility and performance offer better long-term utility than cheaper alternatives with dimmer outputs.
Strengths and Weaknesses:
Strengths: Exceptional brightness; excellent color rendering; reliable Zigbee connectivity; energy-efficient.
Weaknesses: Requires a separate Zigbee hub; incompatible with HomeKit and Hue Entertainment; no native energy monitoring.
Bottom Line: Ideal for Zigbee users needing vibrant, task-oriented lighting. The brightness leap makes it a top pick for workspaces, though hub dependency may deter beginners.
7. Kasa Smart Light Bulbs, Full Color Changing Dimmable Smart WiFi Bulbs Compatible with Alexa and Google Home, A19, 9W 800 Lumens,2.4Ghz only, No Hub Required, 4 Count (Pack of 1), Multicolor (KL125P4)
Overview: Kasa’s KL125P4 4-pack offers hub-free smart lighting via WiFi, targeting users seeking simplicity and broad voice assistant compatibility without additional hardware.
What Makes It Stand Out: Zero hub requirement simplifies setup, while 16 million colors and auto-white temperature adjustment (2,500K–6,500K) enable dynamic lighting for any scenario. Unique energy monitoring provides real-time usage data—a rarity in budget smart bulbs.
Value for Money: Excellent value at its price point. Eliminating hub costs undercuts Zigbee competitors, and Kasa’s 2-year warranty/trusted brand (6M+ users) adds reliability. The 800-lumen output suits most rooms, though not as bright as innr’s offering.
Strengths and Weaknesses:
Strengths: No hub needed; robust app with energy tracking; seamless Alexa/Google integration; affordable per-bulb cost.
Weaknesses: WiFi-only (2.4GHz required); limited to 800 lumens; no Zigbee for mesh networking stability.
Bottom Line: The best choice for beginners or multi-room setups wanting hassle-free installation. Sacrifices raw brightness for convenience, but excels as an entry-level color bulb.
8. THIRDREALITY Smart Color Bulb ZB3 4Pack, Zigbee Hub Required, 650 Lumens,BR30/E26 Flood Light,RGB Full Color,ETL/FCC Certified,Compatible with Home Assistant, SmartThings, Aeotec,Homey,Hubitat,Alexa
Overview: This BR30 floodlight bulb targets recessed ceiling installations, leveraging Zigbee 3.0 for integration with advanced home automation hubs like Hubitat and Home Assistant.
What Makes It Stand Out: Its BR30 form factor (for 5–6" cans) fills a niche for recessed lighting, while functioning as a Zigbee repeater strengthens whole-home network stability. Tunable white (2,700K–6,500K) and 16M colors suit both functional and decorative use.
Value for Money: Fair value for specialized floodlight needs. The repeater functionality adds network value, but 650 lumens lags behind competitors. Best suited for users with existing Zigbee ecosystems needing reliable recessed lighting.
Strengths and Weaknesses:
Strengths: BR30 design for recessed fixtures; acts as Zigbee repeater; wide hub compatibility; ETL/FCC certified.
Weaknesses: Lower brightness (650 lumens); requires precise fixture sizing; no standalone app (relies on hub apps).
Bottom Line: A specialist pick for recessed lighting in Zigbee-powered homes. Prioritize only if you need floodlights—standard bulbs like innr offer more brightness for general use.
9. Sengled Zigbee Smart Light Bulbs, Smart Hub Required, Works with SmartThings and Echo with built-in Hub, Voice Control with Alexa and Google Home, Daylight 60W Equivalent A19 Alexa Light Bulb, 8 Pack
Overview: Sengled’s 8-pack focuses on affordability and broad hub compatibility, delivering reliable white-light automation for large-scale deployments like offices or multi-room homes.
What Makes It Stand Out: The 8-bulb bundle maximizes coverage for whole-home setups, while seamless Alexa/Google voice control (via Echo/SmartThings hubs) simplifies daily use. Energy-saving claims (80% vs incandescents) and group scheduling enhance practicality.
Value for Money: Outstanding value per bulb for white-light automation. The 8-pack slashes per-unit cost significantly, making it ideal for budget-conscious users needing extensive coverage—not color enthusiasts.
Strengths and Weaknesses:
Strengths: Lowest cost per bulb; easy group control; strong energy savings; wide hub support.
Weaknesses: White-only (no color options); requires separate hub; “Daylight” color temp lacks warmth flexibility.
Bottom Line: The top recommendation for white-light automation on a budget. Skip if you want colors, but perfect for functional lighting in large spaces.
10. Sengled Zigbee Smart Light Bulbs, Smart Hub Required, Works with SmartThings and Echo with built-in Hub, Voice Control with Alexa and Google Home, Daylight 60W Equivalent A19 Alexa Light Bulb, 4 Pack
Overview: Identical to Product 9 but in a 4-pack, this Sengled bulb offers the same white-light automation at a scaled-down quantity for smaller spaces or trial setups.
What Makes It Stand Out: Retains all core features of the 8-pack—Echo/SmartThings compatibility, 80% energy savings, and group scheduling—but with flexibility for limited installations. The “Daylight” focus suits task-oriented environments.
Value for Money: Slightly higher per-bulb cost than the 8-pack, but ideal for starters testing smart lighting. Still undercut competitors on price for basic white automation, though color bulbs like Kasa offer more versatility at similar per-unit rates.
Strengths and Weaknesses:
Strengths: Budget-friendly entry point; hub-agnostic compatibility; reliable dimming/scheduling; energy efficient.
Weaknesses: White-only; hub dependency; no color tuning; per-bulb cost higher than bulk packs.
Bottom Line: A practical choice for small homes or renters wanting affordable, no-frills white lighting. Opt for the 8-pack if expanding coverage later.
Why Zigbee Still Powers the Smartest Homes in 2026
Understanding the Zigbee Mesh Advantage
Zigbee’s core strength lies in its self-healing mesh network. Unlike Wi-Fi bulbs that all connect directly to your router (creating a single point of failure), Zigbee devices communicate peer-to-peer. When one bulb receives a signal from the hub, it can relay that command to the next bulb, and so on. This means signals travel further, penetrate walls more effectively, and the network automatically reroutes if a device is temporarily offline. In practical terms, you get faster response times and consistent performance even in large or complex homes, without taxing your primary internet connection.
Compatibility Beyond Just Bulbs
A significant advantage in 2026 is Zigbee’s extensive ecosystem maturity. Choosing Zigbee bulbs isn’t just about lighting; it’s about future-proofing your entire smart home. The same hub that controls your lights can seamlessly integrate door sensors, smart plugs, thermostats, and security systems from numerous manufacturers. This interoperability, built on the open Zigbee 3.0 standard, prevents you from being locked into a single brand’s walled garden. Your lighting system becomes the responsive nervous system of a truly cohesive smart environment.
Local Control: The Game-Changer for Reliability
Perhaps the most critical feature for daily usability is local control. Many Wi-Fi-based systems require a constant internet connection and cloud processing for basic functions. Zigbee, however, processes commands directly on your hub. This means turning lights on/off, adjusting brightness, or activating scenes happens instantly, even during an internet outage. For essential functions like hallway lighting at night or security routines, this local processing isn’t just convenient—it’s fundamental to a trustworthy smart home experience.
Key Features to Prioritize When Choosing Zigbee Bulbs
Brightness and Lumens: Beyond Wattage Guesswork
Forget old wattage comparisons; focus squarely on lumens, the true measure of light output. For ambient room lighting, aim for bulbs delivering 800-1100 lumens (equivalent to a traditional 60-75W incandescent). Task lighting, like kitchen counters, often needs 1100+ lumens. Crucially, verify the bulb maintains its lumen output consistently across the dimming range—some cheaper models get noticeably dimmer than expected at lower settings, defeating the purpose of dimmability.
Color Quality and Accuracy: CRI and Tunable White
Don’t overlook Color Rendering Index (CRI). A CRI of 90+ (ideally 95+) means colors appear vibrant and true-to-life under the bulb, essential for tasks like applying makeup or choosing outfits. For even greater ambiance control, prioritize tunable white bulbs. These let you shift the color temperature from warm, cozy 2700K (like candlelight) to cool, alert 5000K (like daylight), aligning with your circadian rhythm or the time of day, all without needing full color-changing capabilities.
Dimming Performance: Smoothness is Non-Negotiable
A bulb might claim “dimmable,” but the real test is how it dims. Poor dimming results in flickering, buzzing (especially with older wall dimmers), or an abrupt jump from bright to off without smooth transition. Look for bulbs explicitly stating compatibility with leading smart dimmer switches and emphasizing “flicker-free” operation down to 1% brightness. Testimonials mentioning “candlelight dimming” are often a good sign of superior low-end performance.
Beam Angle: Shaping Your Light Intentionally
The beam angle determines how widely the light spreads. Narrow beams (25-40 degrees) are perfect for spotlighting artwork or accenting features. Wider beams (100-160 degrees) create even, ambient room illumination, ideal for ceiling fixtures. Choosing the wrong beam angle leads to harsh glare or dark corners. Match the beam width to the fixture type (recessed downlights need narrower beams than table lamps) for professional-looking results.
Physical Size and Fit: Avoiding the Bulb Bulge
It seems obvious, but size matters! Standard A19 bulbs are common, but check if your fixture requires BR30 (floodlights), PAR38 (outdoor spotlights), or smaller candelabra (B11/E12) bases. More importantly, measure enclosed fixtures carefully. Some smart bulbs generate more heat and require open fixtures; using them enclosed can drastically shorten lifespan or trigger safety cut-offs. Always confirm the bulb is rated for “Enclosed Fixtures” if that’s where it’s going.
Setting Up Your Zigbee Lighting System for Success
The Hub Imperative: Your Command Center
You cannot use Zigbee bulbs without a compatible hub or bridge. This small device connects to your router and translates Zigbee signals into commands your smart home platform understands. When selecting a hub, prioritize reliability, ease of setup, and compatibility with your chosen smart home ecosystem (like Apple Home, Google Home, or Amazon Alexa). Ensure the hub has strong local processing capabilities for that crucial offline functionality.
Mesh Network Health: Placement Matters
To leverage Zigbee’s mesh strength, strategic bulb placement is key. Position bulbs so they have a clear line of sight (or at least reasonable proximity) to at least one other Zigbee device (another bulb, a plug, or the hub itself). Avoid clustering all bulbs in one room far from the hub; distribute them throughout your home. This creates robust signal paths, ensuring commands reach every corner reliably, even if one path is temporarily blocked.
Integrating with Wall Dimmers and Switches
Using smart bulbs with traditional wall dimmers is a common pitfall. Most require the wall switch to be always on to maintain power. If you install a physical dimmer switch, it must be compatible with smart bulbs (often labeled “smart dimmer” or “LED compatible”) to avoid flickering or failure. Better yet, replace traditional switches with smart Zigbee switches. These communicate directly with the hub, allowing physical control without cutting power to the bulb, preserving all smart features.
Firmware Updates: The Silent Performance Booster
Regular firmware updates are vital for security patches, bug fixes, and new feature rollouts. Ensure your hub and bulbs support easy, automatic over-the-air (OTA) updates. A system that doesn’t receive updates becomes vulnerable and may lose compatibility with newer smart home platforms over time. Check manufacturer support policies before investing heavily in a specific ecosystem.
Future-Proofing Your Smart Lighting Investment
Zigbee 3.0: The Universal Language
Always confirm bulbs support the Zigbee 3.0 standard. This unification protocol replaced older, fragmented Zigbee profiles (like Light Link or Home Automation), ensuring near-universal compatibility across hubs and devices from different brands. Zigbee 3.0 is the baseline for seamless integration in 2026 and beyond. Avoid older protocol versions to prevent headaches down the line.
Energy Monitoring: Seeing Your Savings
Advanced Zigbee bulbs and plugs now include built-in energy monitoring. This feature tracks real-time and historical power consumption for individual lights or connected devices. Seeing the actual kilowatt-hours used provides tangible data to identify energy hogs and refine schedules, turning convenience into measurable cost savings and environmental responsibility.
Scene and Automation Sophistication
The true magic of Zigbee lighting shines through complex automations. Look for systems allowing multi-bulb scenes triggered by time, motion sensors, geofencing, or even environmental conditions (like “gradually brighten at sunrise” or “activate security sweep when alarm is armed”). Robust local automation processing ensures these routines fire instantly and reliably, regardless of cloud service status, making your home feel intuitively responsive.
Frequently Asked Questions
Q: Do I absolutely need a separate hub for Zigbee bulbs? A: Yes, a compatible Zigbee hub or bridge is mandatory. It acts as the central translator between the Zigbee mesh network and your home Wi-Fi/smart home platform, enabling control and automation.
Q: Can Zigbee bulbs work without an internet connection? A: Basic on/off, dimming, and locally stored scenes typically work via the hub even during an internet outage, thanks to local processing. Cloud-dependent features (like remote control from outside the home) require internet.
Q: Are Zigbee bulbs more expensive than Wi-Fi bulbs? A: Initial cost is often slightly higher due to the required hub, but the long-term value comes from superior reliability, lower strain on home Wi-Fi, better mesh performance, and broader ecosystem compatibility, often justifying the investment.
Q: How many Zigbee bulbs can one hub support? A: Most modern hubs support 50+ devices, but the practical limit depends on mesh complexity and other Zigbee devices (sensors, plugs). For very large installations (100+ devices), mesh range extenders might be needed.
Q: Can I use Zigbee bulbs with voice assistants like Alexa or Google Assistant? A: Absolutely. Once connected to a compatible hub that integrates with your voice platform, you can control Zigbee bulbs using voice commands just like any other smart light.
Q: Why do my Zigbee bulbs sometimes respond slowly? A: Slow response is often due to a weak mesh network. Ensure bulbs are within range of other Zigbee devices (forming a good mesh path to the hub), the hub is centrally located, and there’s no major interference from thick walls or competing 2.4GHz signals.
Q: Do Zigbee bulbs use a lot of electricity when idle? A: Zigbee bulbs consume minimal “vampire” power (typically less than 0.5W) when off but connected, significantly less than many always-on Wi-Fi devices. The energy saved through smart scheduling usually far outweighs this tiny standby cost.
Q: Can I mix different brands of Zigbee 3.0 bulbs on the same hub? A: Generally, yes. Zigbee 3.0 promotes cross-brand compatibility for core functions (on/off, dimming, color temp). However, advanced brand-specific features might only work within that brand’s ecosystem.
Q: How long do smart Zigbee bulbs typically last? A: Quality LED Zigbee bulbs are rated for 15,000 to 25,000 hours of use. Actual lifespan depends on usage patterns, heat management (avoid enclosed fixtures unless rated for it), and power stability. They vastly outlast traditional bulbs.
Q: Are Zigbee bulbs secure? A: Zigbee 3.0 includes robust encryption (AES-128) for communication. Security is further enhanced by local processing (reducing cloud exposure) and keeping hub/bulb firmware updated. It’s generally considered more secure than many Wi-Fi-only alternatives.
See Also
- 10 Best Zigbee Light Bulbs for Hub-Based Smart Homes in 2026
- 10 Must-Have Wi-Fi Light Bulbs for Seamless Remote Control in 2026
- 10 Best Value Zigbee Light Bulbs for Smart Hubs in 2026
- 10 Must-Have Wi-Fi Light Bulbs for Seamless App Control in 2026
- 10 Best Zigbee Light Bulbs for Hub-Based Smart Lighting Systems in 2026