Prokit's Industries NT-6540 - Manual (Page 5)

Operating temperature 0°C ~ +40°C
Storage temperature -10°C ~ +60°C
Auto laser switch-off After 20 seconds
Auto instrument switch-off After 180 seconds
Dimension 100 x 43 x 28mm
Weight 60g(without Battery)
Remark
[1] Applies for 100 % target reflectivity (white painted wall),
low background illumination, 25 °C.
[2] Applies for 10 to 500 % target reflectivity, high
background illumination, -10 °C to +50 °C.
[3] Tolerances apply from 0.1m to 10 m with a confidence
level of 95 %. The tolerance may deteriorate to 0.15
mm/m between 10 m to 30 m and to 0.2 mm/m for
distances above 30 m
[4] During daylight or if the target has poor reflection properties!
[5] In favorable conditions (good target surface properties, room
temperature) up to 40m.
[6] In unfavorable conditions, such as intense sunshine, poorly
reflecting target surface (black surface) or high temperature
variations, the deviation over distances above 10m may increase
more.
[7] If the instrument is not operated for a long time, please
take out the battery to avoid leakage.
Operation and setting
1. Switching on and off
Long press to switch on the device and laser.
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