521A
11
Specifications
Transmitter Frequency: 1748 Hz
Transmitter Power: 750 Vpp, 285 Vrms
Case Dimensions: 851 mm x 210 mm x 95 mm (33.5 in x 8.25 in x 3.75 in)
Battery: Eight D-cells and one 9 V (included)
Battery Life:
Transmitter: 50 hours nominal
Receiver: 100 hours nominal
Automatic Shut-off: 90 minutes for receiver; turn-off bumper for transmitter
Maintenance
Electric shock hazard:
Before removing the case or battery cover, remove the test leads from the circuit
and shut off the unit.
Failure to observe this warning could result in severe injury or death.
Battery Replacement
1. Turn the unit off.
2. Remove the battery cover.
3. Replace the batteries (observe polarity).
4. Replace the battery cover.
Cleaning
Periodically wipe with a damp cloth and mild detergent; do not use abrasives or
solvents.
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