Flip Flop circuit board

Thread Starter


Joined Dec 10, 2013
Flip flop circuit board is being widely sold on ebay , it's a basic relay plus three resistors a diode and a transistor , it claims to be a bistable latching relay but when I bought a few , none of them worked as such , they just acted as transistor driven relays. Has anyone else had any luck with getting these to work or should ebay be blocking them?Screen Shot 2018-06-01 at 13.31.08.png


Joined Mar 30, 2015
Welcome to AAC!

Do you have a schematic for the board?

If it's not working as advertised, you should try to get a refund from the Seller. If you believe the listing is incorrect, you should get the Seller to correct it. If that fails, you should get eBay involved.