Description -Probe sensor: NTC (10K) 1 percent 25 (for electric 16A type) -Contact capacity: 16A or 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 ): 86x86x13 Note: 1. Only Electric Floor Heating 16A Thermostats come with internal air sensor and the external floor sensor. 2. Water or Gas Boiler 3A Thermostats come with internal air sensor andgt andgt 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