Digital Indoor Thermometer Hygrometer Home Accurate LCD Temperature Humidity Gauge Monitor with Time/Date Display Comfort Indicator Support Alarm Clock and Chime Function ℃/℉ Switchable for Home Office Baby Room Greenhouse Model: Without Backlight/With Backlight(optional) Color: White Material: ABS Temperature Measurement Ranges: -50~70℃(-58~158℉) Temperature Measurement Accuracy: ±0.1℃ Humidity Measurement Range: 10-99%RH Humidity Measurement Accuracy: ±5%RH Battery: 2 * 1.5V AAA Battery Item Size: 109 * 59 * 17mm/ 4.3 * 2.3 * 0.7in Package Size: 125 * 65 * 25mm/ 4.9 * 2.6 * 1.0in Package Weight: Without Backlight: 92g/ 3.2oz                              With Backlight: 100g/ 3.5oz