Extech 401014A Big Digit Indoor/Outdoor Temperature Alert

Display: LCD, 25mm (1”) digit height
Range: 
Indoor (internal sensor): ‐10.0 to 60.0°C (14.0 to 140.0°F)
Outdoor (external sensor): ‐50.0 to 70.0°C (‐58.0 to 158.0°F)  
Accuracy: ±1.0°C (1.8°F) from 0.0 to 50.0°C (32.0 to 122.0°F)
±2.0°C (3.6°F) from ‐50.0 to 0.0°C (‐58.0 to 32.0°F) and 50.0 to 70.0°C (122.0 to
158.0°F)
Battery One: (1) 'AAA' 1.5 V battery
Cable Outdoor temperature sensor cable length: 3m (9.6 ft.)
Dimensions 112 x 102 x 22mm (4.4 x 4.0 x 0.9”)Weight 186g (6.5 oz.)

Datasheet

Manual