Description - Probe sensor: NTC (10K) 1% @25 (for electric 16A type) - Contact capacity: 16A/250V (electric type); - Temperature setting range: 0~90 - Limit temperature range: 5~99 (factory setting: 35) - Protective housing: IP20 - Housing material: Flame retardant PC - Installation: Wall mounted - Length of external sensor: 3M - Size(mm): 86*86*13 Notice: 1. Only Electric Floor Heating 16A Thermostats come with internal air sensor and the external floor sensor. 2. Water/Gas Boiler 3A Thermostats come with internal air sensor >>Thermostat Functions - 1. Memory Function Memorize all your settings after sudden power-off. When power is on again, you do not need to reset it. - 2. Programmable Function Six periods programmable controlling temperature setting. - 3. Insert and external two sensors. 3m external sensor cable is included for 16A type. - 4. Suit for various kinds of electric heating system The thermostat is suitable for heating cable, heating mat, heating film and other electric heating devices. - 5. Wifi function The wifi thermostat can be controlled by Mobile App wherever you are. - 6. Support to be voice control by Alexa (Only wifi model) Package includes: 1 X thermostat 1 X 3 meters external sensor(only Electric Floor Heating 16A Thermostats included) 2 X screws 1 X English user manual (Russia buyers, please contact us and provide your e-mail address to get the Russian manual)