3,3V 4 Channel High/Low Level Triger Relay Module with Optocoupler
High/Low Level Triger Relay Module
Features
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.
Specifications
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.
Additional Information
Device
Relay Module
Type
High/Low | Level Triger
Enhance your automation projects with the BDD Relay Board 4CH 3.3V. This versatile relay module supports high/low level triggers, providing robust control for AC and DC loads up to 10A. Featuring optocoupler isolation for stable performance and user-friendly connections, it's perfect for DIY enthusiasts and professionals alike. Boost your project’s efficiency and reliability with this essential relay solution!