Features: Thermostat supplies single heating contact output or single cooling output contact To get room temperature via sensor and compare with thermostat setting temperature, achieve close and open of output contact,switching temperature difference is 0.5 . With large LCD screen display, easy to read even in the dark. This digital thermostat features high sensitivity and high accuracy. Generous appearance, and sample to operate. Specifications: Power: 2 * AA alkaline batteries (not included) Display accuracy: 0.5 or 1F Probe sensor: NTC(10k)1% Contact capacity: 5A Working environment temperature: 0~50C / 32~122F Temperature control range: 5 ~ 35 C / 41~95 F Temperature display range: 0 ~ 40 C / 32~99 F Output: Switch relay Insulating condition: Normal environment Running program: Set per 1 week as a cycle Installation: Wall mounted or on battery seat Size: 8.5 x 8.5 cm / 3.35 x 3.35in Weight: 165g Package included: 1 x Temperature Controller (battery Not included) 1 x Manual 2 x Screw Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.