12V sainsmart relay board - Raspberry Pi Forums

hi all.
know how connect relay board raspberry ?
link : http://www.sainsmart.com/omron-12v-2-ch ... i-arm.html

if connect same 5v relay board, not working.
so,
gnd ---> gnd
vcc ---> 12v +
in1 ---> gpio rsp

btw. powering relay board 12vdc power adapter , main goal trigger 12dc electro lock.
suggestion welcome !

pin

those things require ground @ in1 trigger. have tried skipping pi , putting gnd @ in1? also, make sure pi , board share ground.

raspberrypi