I am amazed at how different delivery is! Here I received the goods in two weeks !!!!! It's fantastic! From other stores, the goods go for about one or two months, but here such delivery speed is just super! The seller has five stars! The product is of excellent quality on good elements, I checked everything works as it should.
works as expected. If you get over 2.8 volts DC on an output, relay switches off immediately. No flyback diode across relay, which is not good. you should also use DC to power the device on and not AC as printed on the board. Because there is no bridge rectifier on the board but simply one diode. overall good device, better than others. recommend!