Specifications...

Indoor Temperature Range:
-10°C to +59.9°C
(14.1°F to 139.8°F)
Outdoor Temperature Range:
-39.9°C to +59.9°C
(-39.8°F to +139.8°F)

Transmission Range:
330 Feet

Power Requirements:
Receiver Power:
2 “AAA” Batteries
Sensor Power:
1 CR2032 Battery

Dimensions:
Receiver:
4.66 " x 2.29" x .69 "
Sensor:
3.5 " x 1.5 " x .53"

Warranty
1 Year