GAI-Tronics 393-001AD, RED ALERT Auto-dial Telephones - Manual (Page 15)

P UB . 42004-472B
A UTO -D IAL T ELEPHONE M ANUAL P AGE
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External Power for –003AD Models
The Plug-in Power Supply is used for operations below −4º F (−20º C) and requires 120 V ac input to
provide a 5 V dc output to the unit. The Plug-in Power Supply is provided with a connectorized, 4-foot
power cable that plugs into P17 on the telephone PCBA. Remove the jumper from P17 pins 3 and 4 and
insert to the adjacent header J18 when using the plug-in power supply. See Figure 11 on page 16 for
jumper locations.
N OTE : The external power supply provided with these models does not provide telephone line power for
communications. It simply activates a heater circuit to allow operation to −40 ºC.
Connecting a Model 530 Series Strobe
Figure 10 below shows a typical connection detail of the GAI-Tronics 530-001/531A Strobe (sold
separately).
Figure 10. (Model 397-00xAD is shown as an example)
Connection to Optional GAI-Tronics 530-001/531A Strobe