Model Number: AMD40 Brand Name: TLead Key Specifications/Special Features: Specifications:Measuring range: 0.05 to 40m (2in up to 1575in)Measuring accuracy: ±2mm (±0.08in)Measuring units: m, in, ft

Laser class: Class 2, 635nm, <1mW

Dust protect/splash proof: IP54

History measurement recodes: 20

Keyboard type: super soft-touch (long life) over 1 Million times

Operating temperature: 0℃ to 40℃ (32℉ to 104℉)

Storage temperature: -10℃ to 60℃ (- 4℉ to 140℉)

Battery life: up to 5,000 measurements

Batteries type: 2x1.5V AA

Auto laser switch off: after 0.5min

Auto instrument switch off: after 3min

Accuracy to laser beam: ±0.5°

Accuracy to laser housing: ±0.5°

Size (H x W x D): 110x43x23mm