High/Low Level Triger Relay Module [BDD RELAY BOARD 4CH 3.3V] .::. Communica Online

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3,3V 4 Channel High/Low Level Triger Relay Module with Optocoupler

Part No: BDD RELAY BOARD 4CH 3.3V

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Maximum load: AC 250V/10A, DC 30V/10A.
The chip optocoupler isolation, strong driving ability, stable performance, trigger current 5mA.
Working voltage is 3.3V.
Every channel of the module can be set up by high jumper or low level trigger.
Fault tolerant design, even if the control line is broken, the relay will not act.
Power indicator (green), 4 relay status indicator (red).
The interface design is humanized, all interfaces can be directly connected through the terminals, so it is very convenient.
Module size: 73mm x 50mm x 18.5mm (length x width x height).
There are 4 fixed bolt holes, holes 3.1mm, spacing 67mm x 44.5mm.

DC+: Connect the power positive pole.
DC-: Connect the power negative pole.
IN1-IN4: According to the setting of each way, the corresponding relay-operating can be controlled by high or low level.

Relay output: there is a 12 wire interface, all interfaces can be directly connected to lead to facilitate user use.
NO1--NO4: Relay normally open, the relay suspends before pulling in, and then short-connect with the COM.
COM1--COM4: Relay common interface
NC1--NC4: Relay normal close, short connected with COM before pulling inand suspended after pulling in.

High and low level trigger option:
S1-S4 is the high level trigger selection of relay 1 Channel - 4 Channel.
When COM is short connected with LOW, the corresponding relay is LOW level trigger, while when COM is short connected with high end is high level trigger.