A complete Zigbee ecosystem for floor heating. Illuminated E-Ink touchscreen thermostat, Ethernet gateway and 8-zone controller — designed for smart homes.
ZAO combines a smart E-Ink thermostat, an Ethernet Zigbee gateway, a 8-zone control center and an OpenTherm boiler controller — stable, fast and energy-efficient underfloor heating automation.
Zigbee controller with 10 relays for underfloor heating automation across 8 zones, pump and boiler. Native Home Assistant integration, RC snubber protection on every 230V contact.
Illuminated 4.2" E-Ink display (frontlight), capacitive touchscreen and LiPo battery — wireless, placed anywhere.
Full ZAO Thermostat for Underfloor Heating Automation details
The backbone of the ZAO underfloor heating automation ecosystem. Zigbee 3.0 gateway with dedicated Ethernet (not just Wi-Fi), for maximum stability and local Home Assistant integration, no cloud.
Zigbee module for underfloor heating automation at the boiler level, via OpenTherm or dry-contact relay, with galvanic isolation through optocouplers. Overvoltage and fuse protection.
Save up to 40% on electricity or gas
Individual temperature in every room
No more cold spots
Remote control, from anywhere
Fast return on investment
Simple to install
Cloud-free option — 100% local
Designed for modern homes
The gateway appears automatically via Zigbee2MQTT. No account, no subscription — 100% local control.
Over-the-Air firmware updates, open Zigbee protocol. Your system stays current without manual intervention.
Hardware engineered for stable operation and predictable control, with integrated electrical protection.
PCB design and system architecture done in Romania. Direct support, in your language.
The gateway connects to your router via a dedicated Ethernet cable — not Wi-Fi — and forms the home's Zigbee 3.0 network in seconds. Appears automatically in Home Assistant through ZHA, no pairing code, no cloud account, no extra app to install.
The ZAO Thermostat for Underfloor Heating Automation, ZAO Control Center for Underfloor Heating and ZAO Boiler Controller for Underfloor Heating join the Zigbee network in seconds — press the pair button, the LED ring confirms the connection. Thermostats are DIY wall-mounted; wiring the 230V relays requires a certified electrician.
Set the temperature per zone from the app, from Home Assistant, or right on the thermostat's screen. Schedule per-room hours, tie the pump to any active zone through your own automations, and track consumption — all local, with no external server that can go down.
ZAO isn't a shield bolted onto someone else's thermostat. Every board — thermostat, gateway, control center, boiler controller — is designed, prototyped and tested in-house, with components chosen for long-term reliability.
No subscription, no mandatory account, no server that might disappear in two years. The system runs locally over Zigbee — if the internet drops, your thermostats keep heating the house.
PCB design, firmware and system architecture built in Romania. When you write in with a question, you talk to the engineer who designed the board — not a support chatbot.
Zigbee is a low-power wireless protocol designed for sensors and actuators. Unlike Wi-Fi, Zigbee enables 2-3 year battery life (not 3-6 months), low latency (50ms vs 200-500ms), and a self-healing mesh network where devices communicate even if the gateway is temporarily offline.
The ZAO gateway connects via Ethernet to your router and appears automatically in Home Assistant through Zigbee2MQTT. No cloud account or subscription required. All devices pair in seconds using the pair button. 100% local control, no dependency on external servers.
For a 3-room apartment (8 heating zones): 3-4 E-Ink thermostats (€135-240), 1 Zigbee gateway (€50-80), 1 8-zone control center (€120-180), 8 thermostatic actuators (€120-200). Estimated total: €425-700. Early adopter pricing will be confirmed at 2026 launch.
Partially. Thermostats are DIY-friendly (wall screws + Zigbee pairing in 15-20 min each). The 8-zone control center requires a certified electrician for 230V actuator wiring, 16A pump connection, and boiler control. Estimated time: 3-5 hours for 8 zones.
The 4.2-inch E-Ink display with capacitive touchscreen consumes very little power (5-10μA standby). The built-in LiPo battery provides 2-3 years of autonomy. USB-C charging every 2-3 years. By comparison, Wi-Fi thermostats with LCD require battery replacement every 6-12 months.
Yes, in 99% of cases. Compatible with: condensing gas boilers (Viessmann, Vaillant, Ariston, Bosch) via dry contact or eBUS, classic gas boilers, wood/pellet boilers (pump control), air-to-water heat pumps, and electric boilers. The control center provides a 16A pump relay + dry contact relay.
More questions? Check the complete guide or write to us.
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