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Features:
1. The module normally open interfaces Maximum load : AC 250V/10A, DC 30V/10A.
2. Using SMD optocoupler isolation , driving ability , stable performance ; trigger current 5mA.
3. Each way module can be set high or low triggered by jumper.
4. Fault-tolerant design , even if the control line is broken , the relay will not operate.
5. The power indicator ( green ) , 8 relay status indicator ( red )
6. Equipped with fixing screw hole, easy to install. Has four mounting bolts holes , hole 3.1mm, pitch 136mm * 44.5mm.
7. Input terminals can be arbitrarily set high and low level, the control mode is more flexible.
8. The input and output are 5.08mm wiring terminals, wiring is more convenient, suitable for PLC control.
Module Interface :
1. DC +: 12V positive power supply
2. DC-: negative power connection
3. IN1-IN8: each way based on the settings , can be high or low to control the corresponding relay
Relay outputs : 24 line interface, the interface can be directly connected to all leads , user-friendly
1. NO1 - NO8: normally open relay interfaces , relay before the vacant after the pull shorted with COM
2. COM1 - COM8: Relay Common Interface
3. NC1 - NC8: normally closed relay interface relay shorted with COM ago , after the pull- vacant
High and low trigger selection :
1.S1-S8 in order to relay a road -8 way high and low trigger selection ;
2.Com with low short circuit , triggering the corresponding relay is low , while the high end of the short com high trigger
Package Included:
2*12V 8 Channel Relay Module With Optocoupler
Konstantins Ribakovs
Reviewed in the United States on August 15, 2024
Use it to make a hydraulic controlling system.
Justin H Scott
Reviewed in the United States on October 19, 2024
Obviously I love the opto-isolation of the input section and the automatic inversion of trigger signals set by the jumper blocks, but the downside is that if I'm building something that relies upon the trigger line having the same resistance of the relay coil, that's not going to happen. regardless of it being powered at 12V, the inputs tend to make the relays trigger around 1.4v and release around 1.2v, so creating an RC delay circuit to delay the opening or closing of the relays would be impossible. But, the use case for this are for microcontroller hackers to be able to drive the relays from their MCU GPIO pins, and the good news is that regardless of the voltage input to the board or the relay voltage value, you can still trigger the relays with any logic level from 3v3 up to the rated voltage of the board.
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