GAI-Tronics 227-005 SMART Auto-Dial Handset Telephones - Manual (Page 20)

Pub. 42004-443C
SMART A UTO -D IAL H ANDSET T ELEPHONES P AGE
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Figure 11. Model 277-005 Mounting Details
External Power for Lower Operating Temperatures
The Model 40404-045 Plug-In Power Supply is available (sold separately) to ensure stable operation
between −20º C and −40º C. The 40404-045 requires 120 V ac input and provides a 5 V dc output to the
unit’s amplifier circuits. The 40404-045 is provided with a connectorized, 4-foot power cable that plugs
into P17 on the telephone PCBA.