Features: 1. Low Power Consumption Thermostat, Dedicated To Water And Gas Boilers 2. Battery Powered, Requires 3xAA Batteries(without), No Separate AC Power Supply Required, Easy To Install 3. App Remote Control, Smart Life/Tuya App Remote Control Anytime And Anywhere 4. Manual Mode/Program Mode/Temporary Program Mode 5. Programming Function, 5+2/6+1/ A Week, 6 Periods On Working Days, 2 Periods On Rest Days, Supports Different Temperature Settings And Runs As Planned. Description: 1. Measurement Object: Wall-Mounted Boiler 2. Opening Size: 86x86x13 (Front) + 27 (Rear) mm 3. Overall Dimensions: 86x86x13 (Front) + 27 (Rear) mm 4. Control Type: Temperature 5. Temperature Range: 5℃-60℃ 6. Installation Type: Wall Opening 7. Control Mode: Intelligent Temperature Control Regulator 8. Temperature Measurement Error: 1℃ 9. Working Voltage: AC 95-220V 50/60Hz Battery: 3 X AA battery(without) Note: Need To Connect To The Gateway To Use Different Batches May Have Differences In Product