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Battery Installation
E. Speed Measurement Mode
“ α ” must be less than 10°. The smaller the angle, the higher the accuracy.
Short press . Move the target sign along with the object being measured. The speed
of the movement can be measured accordingly.
* Speed measurement range: 18~300km/h
Km/h
α
Direction of motion
Please use 1 x CR2 battery to power on the device.
When (Low battery) is displayed, pls replace the battery in time, otherwise the
distance error will increase; Please take off the battery if it is not used for long time.
1. Pull up the rotary handle on battery cover (photo 1) and rotate it anti-clockwise until the
battery cover is opened (photo 2).
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