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 Note: 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 Remember all your settings after sudden power off. When the power is on again, you do not need to reset it. -2. Programmable Function Six periods programmable control temperature setting. -3. insert and external two sensors. 3m external sensor cable is included for 16A typ. -4. Suit for different types 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 meter external sensor (Only Electric Floor Heating 16A Thermostats included) 2 X screws