WebRelay Users Manual
The WebRelay has a five-position, removable screw terminal connector for power and input connections, the
three-position connector provides connections to the internal relay.
5-Pin Connector
Terminal Description
Vin+ Power supply input +
(not required for POE model)
Do not exceed maximum power supply voltage (9-28VDC)
Vin- Power input- (GND)
Negative side of the power supply
Input- Digital Input - The negative side of the optically-isolated input.
Input+ Digital Input + The positive side of the optically-isolated input.
+5Vout +5VDC out. This voltage is provided as a convenient voltage
source for the optically-isolated input. It can be used, for
example, when a switch is needed to control the input state.
This can be done by connecting the INPUT- directly to VIN-
and then connecting the 5Vout to through a switch to the
INPUT+. Do not use this output for other purposes.
3-Pin Connector
Terminal Description
C Relay COMMON
NO Relay NORMALLY OPEN
NC Relay NORMALLY CLOSED
Xytronix Research & Design, Inc. Page 11
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