4 Channels DIN Rail Mount 16A Power Relay Interface Module DC 24V PNP/ NPN

8 Channel AC/DC 24V Rail Mount Relay Interface Module PNP NPN SPDT 16A Plugga...

2 Channels DIN Rail Mount 16A Power Relay Interface Module DC 24V PNP/ NPN

8 Channel AC/DC 24V Rail Mount Relay Interface Module PNP NPN SPDT 16A Plugga...

16 Channel 1 SPDT DIN Rail Mount 24V DC/AC Relay Interface Board Module

8 Channels DIN Rail Mount 16A Power Relay Interface Module DC 12V PNP/ NPN

Relay Module Interface Boards for Arduino Low Level Trigger 1/2/4/6/8 Channels

New TYP Universal dc 12v 24v 36v 72v 4 Channels Wireless Remote Control Switch R