Secure Meters Horstmann H3747 4 Channel Programmable Room Thermostat Direct Replacement for H37XL and H47XL Bluetooth Programming with Smart WIFI Add-On Option App Controlled

The H3747 is a 4-channel smart programmer, which can control heat pumps, combi and system boilers, or even regular wired thermostats. Designed to supersede the ChannelPlus range by using the same wall plate with minimal wiring changes, whilst bringing connectivity features along the way. Out of the box, it is Bluetooth-enabled and works with a mobile app as well as the provided programable thermostat. With the optional plug-in Wi-Fi adapter, the H3747 can even remotely control your home heating system in a few simple steps.
Easy replacement of the ChannelPlus range – Uses a standard 9-pin backplate for easier retrofits of H37XL and H47XL – Will also replace 425 Tiara, 425 Diadem, 425 Coronet, H17XL and H27XL
Combi or system boilers and heat pumps up to 2-zones – Central heating and hot water control
Programmable via the Secure Controls bluetooth installer app or the wireless display without a Wi-Fi connection
Smart control capability by Wi-Fi adaptor (Sold separately)
7 year no quibble warranty
Can control existing wired room thermostats