1. Indoor temperature detection range: -9.9-60 (14.18-140) 2. Indoor humidity detection range: 10%-99%RH 3. Temperature measurement error: 1 4. Humidity measurement error: 5%RH 5. Temperature unit [C/] can be switched for display Environmental comfort display Record the maximum and minimum values within 24 hours Low battery prompt The thermometer and hygrometer has a support frame on the back for placement and a hanging hole for wall hanging Screen size: 2.56 inches Power supply: 2xAAA batteries (not included) Color: White Material: ABS Package Contents: 1 x Thermometer Only 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.