🚀 Enhanced Performance: HiLetgo Channel Isolated Optocoupler Trigger for Optimal Signal Transmission Review

These little relays are fast, reliable, and nearly bulletproof! It's handy to have two sets of two relays, both of which are DPDT and can switch positive or negative! I used one to reverse polarity to a 12v servo to open the hen house door and the other to choose whether to energize the first relay or the DPDT switch to manually control the door. I also had to use a diode to prevent the manual switch from sending current back through the normally closed contact of the first relay. Since the…

I'm not sure if out of all the bad batches I got just one bad batch or something. The first block gets stuck in the normally open state, the power indicator is on, as well as the normally open relay 2 when only power is connected. It doesn't matter if the signal on input 1 or input 2 is high or low with the jumper set, nothing changes. To deceive. OK, I think it could happen. Even if it's two packs, I can continue with my project. I open the second relay, plus and minus power, and inputs 1 and…

That's true without a diagram, but it's very easy to understand. coil 12V; Connect DC- to ground and DC+ to 12V. The two switches have a common normally closed and normally open position and are rated for 10 amps; identified as COM1, NC1, NO1 and COM2, NC2, N02. Jumper selectable positive or negative trigger; defined as Com, High and Low. I used a high trigger so I connected the com jumper to high. If you want the com low trigger jumper to be set low. IN1 and IN2 must be 12V to switch the…