GarrettCom S14 - Manual (Page 59)

S14 & PS14P (PoE) Convenient Switches Installation and User Guide
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DC Power Terminals: “+”, “-”, floating
GND: Terminal for “earth” or ground wire connection to the S14H chassis
Input Voltage: 8 - 15V DC (12V DC)
18 – 36V DC (24V DC)
36 – 60V DC (-48V DC)
Input current: 0.8 amp.(12V DC)
0.4 amp max.(24V DC)
0.2 amp max.(-48V DC)
Power Consumption: 3 watts typical, 4 watts max.