HiLetgo12V 1 Channel Relay Module with Optocoupler Isolation Support High or Low Level Trigger

Purchased as an experimental unit for various bench work. Delivered on time, works perfectly.

Used it to link my old house security alarm to my new security camera system. Now I can receive alarm to my cell phone.

They work but weren't correct for the application I was using them for

I used this product only 2 months. Today it was stopped working. When bought at new it working very good and relay response very fast. Now stop working and data leg not receiving and responding signal anymore. Recommend for testing only.

Used for Ham Radio Amp InterfaceI needed to isolate the radio from a vintage Linear amp

Used to connect 12-volt trigger from a A/V Receiver (Denon but another's work the same) to flip the input switch on a Pyle Ps1000 power sequencer. The sequencer powers up my sub-amps and other devices I want to power-on when I power on the receiver. Just wired ground and 12-volt from the mono-mini audio output connect (trigger out) to the ground and 12-volt on the switch. Lights it up and shows it is working. Wired ground and red-wire (sorry not sure on the pin-out 4 DIN input cable that came with the Ps1000 but testing it manually was easy) into the Ps1000 switch input and it does the trick so far super reliably. Would be nice if this has a little case to keep the switch in - it is just sitting on the shelf behind my A/V equipment.

This relay did not work as intended. Usually a relay will energize its output terminals when a trigger signal is supplied. This one did not. Nor did the first one i ordered. I sent the first one back. Second one additionaly had defective phippips head clamp terminals. Had to solder my DC+ wire to the terminal. The fix for this relay is a jumper wire from the Dc+ to the COM output. The relay switches just fine but without the jumper wire no power to any of the output terminals. The relay is so sensitive that it functions with the 2.5v 800mA Dc trigger signal while on the high jumper setting. The low jumper setting was defective on both relays and did nothing.This relay is garbage. I'm only using to trigger 3 car stereo Amplifiers simultaneously as the 2.5v 800mA trigger signal I have is not enough. This is a non critical low amparage application. My load is probably less than 1.5amps @12v. Highly not recommended for anything critical or safety related.

I used this relay module to trigger the starter circuit in my car with the signal coming from the push button start module. It outputs a +12v but I wasn’t sure how much current the module could output so this relay module fit the bill because it takes a very very low current to trigger.