CAT# MK-2633
$21.95 each
Velleman # K2633. Control up to four high-power circuits from a low power drive circuit. Four 3 Amp / 240 Vac, S.P.D.T. relays. Quick and easy to build. LED status indicators. 3" x 1.7." Power supply, 9Vdc, 300mA (not included).

Note: Kits cannot be returned or exchanged once assembly has begun.
Average Customer Review:  (2 Reviews) Write A Review

Customer Comments

Average Customer Review:  (2 Reviews) Write A Review

A customer from UNIVERSITY PK, IL US
I had to replace the transistors with PNP type to get it to work. Relays will trigger when pins 1, 2, 3 or 4 are shorted to ground.

A customer from Quakertown, PA
Just wanted to know if anyone had any issues with this kit. I ordered two and had problems with BOTH. 2 of the relays were short between C and NO. I also believe there are errors in the directions as neither of my kits functioned properly. I wound up using the remaining relays on a blank board and created my own card.