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Smart Whole House Wifi Heating Thermostat by Saswell


Compatible with Google Alexa

EAN: N/A SKU: Smart_Wifi_Thermostat_Saswell Category: Tag:

Multi Part System

Part 1 – Wifi gateway (large white box). This acts as a bridge between your home wifi system and sends wireless radio signals to the boiler controller and to the radiator thermostat valve controllers. The gateway also receives signals from your smartphone via your Wifi connection.

Part 2 – Boiler Receiver (smaller white box with aerial). Wireless signals are received from multiple thermostats around the house which are sent back to part one, the gateway. The gateway then sends signals to the boiler receiver, to tell the boiler when to turn on/off.

Parts 3 to 12 – Wi-Fi electronic programmable thermostat valve controllers, up to 10 max.

Please see images for a visual description of the communication between these devices

Technical Specification – Wifi Gateway

  • Voltage: 5V, 1A, mains adapter with UK plug included
  • Communication distance: 100M in open air, (some reduction when passing through walls)
  • WIFI frequency size: 2.41GHz-2.48GHz
  • RF frequency size: 868MHz
  • Communication protocol: TCP/IP MQTT
  • Network Capacity 10 room thermostats
  • Working temperature: -20 °C-60 °C
  • Working Humidity 90% RH
  • Dimensions: 80*125*26mm
  • IP21
  • Color: White
  • Instructions booklet for all 3 parts of this system

Technical Specification – Boiler Receiver

  • Power source: 100 – 240 V AC
  • Output: 1 channel passive linkage (max 10A)
  • Wireless signal frequency: 868 Mhz (FSK)
  • Wireless transmission range: 100m in open air, (some reduction when passing through walls)
  • Ambient temperature for storage/transport: 10 to 60 deg C
  • Dimensions : 86 x 86 x 24.4mm
  • IP Rating: IP21
  • Wifi Frequency: 2.41GHz – 2.484 GHz

Technical Specification – Boiler Receiver – Max of 10 can be added to this system

  • Power source: 2 AA Battery (may use with rechargeable batteries but not recommended)
  • Battery lifetime: 1 Year
  • Temperature setting range: 5 to 30 deg C
  • Temperature setting accuracy: 0.5 deg C
  • Temperature display range: 0 to 50 deg C
  • Shipping and storage temperature: -10 to 60 deg C
  • Frequency: 868 MHz
  • Wireless transmission range: 100m in open air, (some reduction when passing through walls)
  • M30 Screw Thread onto valve top (don’t fit onto older ¾ inch valves heads unfortunately)
  • Plastic adapter rings included for half inch Caleffi & Giacomini radiator valve heads


A TRV will not work via the app on it’s own. A gateway and boiler receiver are needed

Weight0.5 kg


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