Icom IC-2SA Instruction Manual page 20

5 RELATED FUNCTIONS
5-4 Auto power off function
The transceiver has an auto power off function. If you
forget to turn OFF the transceiver, the function auto-
matically turns OFF the receiver and transmitter circuits
60 minutes after a switch is pushed and the squelch is
closed.
After the circuits are OFF, the function display shows
clock time, and then the transceiver stops operating.
After 60 min.
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To operate the transceiver, turn power OFF then ON
again.