Vial, dial scale has green LED light;
One power key, will power on after 2second;
Range:0-360 °
Measure accuracy: ±1.0 º
Low battery detect:=3.0V ±0.2V,Has audible low battery warning
Automatic power off: 3min ±30S
Current: working: <150mA ; power off:<35UA;
Working temperature:0~40;
Working humidity:=85%RH;
(AAA) 1.5V battery
