Led indicator on Digital microwave sensor always off

Account cancelled 2018-07-23 18:43:55 2133 Views1 Replies
Hello, I connect pin + connect to 5v and pin - to ground. the result LED power ON but LED indicator(yellow) off, I move my hand on sensor but LED still off.
How to solve that?
thanks

2018-08-01 17:30:16 Did you connect the signal pin? And how about moving the sensor, did the LED light? robert.chen