Velleman K2633 RELAY CARD
Connecting a number of relays to the outputs of an electronic circuit may seem very simple, but in reality it might possibly create some problems regarding the cabling. This kit provides an attractive and compact alternative. Moreover, it can be assembled and connected very rapidly.
4 x 3A relay outputs
power supply: 9VDC / 300mA
pcb dimensions: 76 x 69mm / 3 x 2.7"