Low Battery Indication; Auto Power Off; Enhanced Brightness - Martindale Electric PSI4000 Instruction Manual

If the ON LED flashes when the unit is turned on, the batteries are
low and need to be replaced (see section 4.1 battery replacement).

3.3 Auto Power Off

If the PSI4000/PSI4300 is inactive for a period of approximately 5
minutes it will automatically power down.

3.4 Enhanced Brightness

Press the button to increase the brightness of the LED's when
using the PSI4000/PSI4300 in strong ambient light.
Green central phase sequence
L1, L2, L3 LED
Anti-clockwise arrow green
LED's
(lit in rotating sequence)
Phase live LED's, related to
L1, L2, L3 sensor clips
Instrument power "ON" LED
(flashes if battery low)
Instrument ON/OFF switch
Enhanced brightness switch
(for strong ambient light)
Red central phase sequence
L1, L3 ,L2 LED
Clockwise arrow red LED's
(lit in rotating sequence)

3.2 Low Battery Indication

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