Using selective call
Outback HF Radiophone 5-31
Using the external alarm feature
An external alarm facility is made available through the
external alarm socket on the rear panel (refer to figure 2.2).
A pair of relay contacts are wired to the socket, which close
for two minutes when your Radiophone receives a selective
call. The relay contacts can be used to operate an alarm bell
or buzzer.
• Relay contact rating: 50V DC - 1 Amp
• Plug connections: pins 2 and 3.
Further details on the socket can be found in section 13.
These contacts must not be used to switch voltages
greater than 50V, or loads that draw more than 1 Amp.
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