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4
Blinks at ½ second rate
Truck battery voltage <8 volts - light will
blink until power is lost or is restored
–
early power fail (EPF) indication
C. Handheld Transmitter
1. Battery Type
The 8494 RF handheld transmitter uses two AA batteries. Lithium batteries are
recommended. The low battery light will illuminate with approximately two hours of
transmission time remaining before the batteries are completely discharged. Due to the
time-voltage characteristics of rechargeable batteries, this time could be drastically
reduced if rechargeable batteries are used.
2. Replacing the Batteries
The batteries can be replaced with any standard fresh AA lithium batteries.
1) Turn the transmitter power off.
2) Remove the battery cover.
3) Remove both of the old AA batteries at the same time.
4) Insert the new AA lithium batteries.
5) Replace the battery cover.