FUNCTIONS DISPLAY - manual control, heating; P1, P2, P3 comfortable & energy saving Programmable heating ; indoor temperature display; children safety lock; 1st-6th interval modes setting; communication icon; Date, Time, 7 days of week display; FEATURES - Large LCD touch screen with LCE blue backlight display,double temperature display ,Time display (minutes, hours, weeks); daily and weekend modes setting; Internal and external temperature sensor; display precision is 0.5,inner precision is 0.1; Room temperature automatically calibration function Warning - The thermostat installed on 1.5m above the ground, not to install it to the wall corner, door, window side or behind the door or in such unheated area as exterior wall. Avoid hot, cold air duct, radiator, flue or thermal pipe; Holidays - Rotates rotary press key to choose holiday ,press ENTER key to enter into holiday ,rotates rotary press key to adjust days(countdown from holiday starting,back to work at automatic after holiday ends); Home Safety Protection, Children lock designed; NTC sensor, frost protection available; Specification: Material: ABS plastic Cpacity: 5A/250V Working environment temperature: 0~50C/32~122F Range of temperature display: 0~40C/32~ Range of temperature adjustment: 5~35C/41~95F Display accuracy: 0.5C or 1F Battery Power: 2 x AA (Not Included) Output: Switch relay Probe sensor: NTC(10k)1% Thermostat - 86 x 86 x 40mm Package Includes: 1 Piece LCD Thermostat