Lost Mode And Auto Shutoff - Fisher F-Pulse Owner's Manual

Lost Mode and Auto Shutoff:

OPER TION
If the F-Pulse is left powered on with no button presses for 5
minutes, it will enter Lost Mode. The unit enters a low-power
setting, the LED flashes and the unit beeps every 15
seconds. After 10 minutes, the unit will completely power
down.