1. Low Power Consumption Thermostat, Dedicated To Water And Gas Boilers2. Battery Powered, Requires 3AA Batteries, No Separate AC Power Supply Required, Easy To Install3. App Remote Control, Smart Life/Tuya App Remote Control Anytime And Anywhere4. Manual Mode/Program Mode/Temporary Program Mode5. 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.Measurement Object: Wall-Mounted BoilerOpening Size: 86x86x13 (Front) + 27 (Rear) MmOverall Dimensions: 86x86x13 (Front) + 27 (Rear) Mm (Mm)Control Type: TemperatureTemperature Range: 5℃-60℃Installation Type: Wall OpeningControl Mode: Intelligent Temperature Control RegulatorTemperature Measurement Error: 1℃Working Voltage: AC 95-220V 50/60HzNote:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The UseShipped without 3 AA batteriesColour:WhiteMaterial:ABSPackage Contents:1 x Battery Tester Relay Analyzer2 x 18650 Battery1 x Charger BaseOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.