The Extension Kit enables you to control your hot water. It is also needed to connect the
The Extension Kit can only be used as an additional product of the Smart Thermostat - Starter Kit (v3).
The Extension Kit allows you to use your Smart Thermostat with heating systems that don’t have a thermostat or have a wireless thermostat.
connects directly to your heating system via cable. The Smart Thermostat communicates via radio with the Extension Kit to control your heating.
The Extension Kit requires a Smart Thermostat -Starter Kit (v3) to work.
5-36V DC 0.2A / 100-240V AC 0.2A
1 status LED, 1 mechanical button
Extension Kit 102 x 150 x 28 mm / Package: 175 × 175 × 55 mm
Extension Kit 210g / 550g package
Preparation certified ISO 14001 / ISO 9001 / BS OHSAS 18001 / EU RoHS directive 2011/65 / EU Recyclable packaging
via the Internet Bridge which is connected with a network cable to your internet router.
868 MHz, Mesh (6LoWPAN)
TLS 1.2 (SSL), 2048-bit Extended Validation Certificate / TLS 1.2 (SSL) 256-bit elliptic curve / AES-CCM AES-CCM encryption
PC + ABS plastic / white, matt
Uses the outside temperature and the location of the residents for energy-efficient heating control.
The Extension Kit allows your Smart Thermostat to be wirelessly connected to your heating system.
Allows you to control hot water if you have a separate water tank by replacing an existing programmer.
The Extension Kit is needed in addition to a Smart Thermostat - Starter Kit (v3). The Extension Kit connects directly to the boiler via cable and communicates with the Smart Thermostat via radio.
...and many more
both 230V and extra low voltage interfaces (digital bus / analogue)
combi, system and heat-only boilers
conventional and condensing boilers
common Y-, S- and W-plan setups
hydronic underfloor systems
electric underfloor systems with a maximum switching current of 6 A
air source and ground source heat pumps (heating only)
zoned systems (one Smart Thermostat per zone)
relay compatible both switched live systems and potential free (dry contact) systems
The Extension Kit and the Smart Thermostat - Starter Kit (v3) are easy to install yourself. Our online installation guide gives you detailed step-by-step instructions that are tailored to your home heating system.