Johnson Level & Tool Mfg. 40-6517 - Manual (Page 16)

16 ©2010 Johnson Level & Tool - Rev. 1
2. Components
(a) Exterior Instruction
1) Holding Cord
2) Signal Indicator
3) Horn
4) Horizontal Vial
5) Detecting Window
6) Reference Front Marker
7) Power Key
8) Reference Back Marker
9) Connection Port
10) Battery Door
(b) Display
When first turning the detector on, the middle signal
indicator turns red first and then turns green. If the
horn gives two short sounds and the detector powers
off automatically, it means that the battery voltage is
seriously low and it is necessary to replace the battery
immediately. When turning the power on and the down
signal indicator flashes, it means that the battery is low
and it is necessary to replace the battery.
Power Key: Turn on/off the detector
3515H-All_Manuals 6/2/10 10:16 AM Page 16