• Works With ENGO Thermostats: binds directly to an ENGO EONE, E40 or E25 ZigBee thermostat to switch a boiler, pump or valve actuator, and keeps working offline once bound
• Gateway Needed for the App: pairs through an ENGO EGATE-PRO or EGATEZB ZigBee gateway, sold separately, for the free ENGO Smart app, schedules and Alexa or Google Home voice control
• Small Enough to Hide: the 46 x 46 x 24 mm module fits a flush installation box behind a light switch or socket, or mounts on a DIN rail with the bracket provided
• Volt-Free Output up to 16A: NO and COM dry contact rated 16(5)A for a boiler switch-live, circulation pump, lighting, fans, gates or electric heaters, powered from 230V AC
• Fail-Safe Heating Control: if a bound thermostat loses contact the relay switches off after 50 minutes, with a manual button for on and off and an LED for pairing and relay status
• Extra Input and Smart Rules: the S1 and S2 input takes a wired switch or push button, or an optional ENGO EFS300 sensor for temperature rules, installation by a qualified electrician

The ENGO EREL-16ZB is a small ZigBee 3.0 relay module that switches a boiler, circulation pump, valve actuator, lighting circuit or other 230V load from your phone or straight from an ENGO thermostat. Its volt-free NO/COM output is rated up to 16(5)A, so it can act as a wireless switch-live for a boiler or switch a load fed through the COM terminal.

ENGO Binding links the relay directly to an ENGO EONE, E40 or E25 ZigBee thermostat. Once bound, the thermostat turns the relay on and off by itself, online or offline, and if the relay loses contact with the thermostat it switches off after 50 minutes for safety.

For the free ENGO Smart app (iPhone and Android), schedules, rules and switching history, the relay pairs with an ENGO EGATE-PRO or EGATEZB ZigBee internet gateway, sold separately. Through the app and gateway it also works with Alexa and Google Home voice control. Stored rules keep running if the internet drops.

The S1/S2 input accepts a wired push button or switch, or an optional ENGO EFS300 temperature sensor for temperature-based rules. A button on the front switches the relay by hand, and an LED shows pairing, binding and relay status.

At 46 x 46 x 24 mm it fits a flush installation box behind a light switch or socket, or mounts on a DIN rail with the bracket provided. Supply: 230V AC 50Hz. IP20, indoor use only. Must be installed by a qualified electrician.