24-ch Digital Output Module
4/8-ch High/Low Speed Counter Module
24-ch TTL Digital I/O Universal PCI Card
24CH TTL DIGITAL I/O LOW-PROFILE CARD
24 Channels Form C Relay (12V) Daughter Board, Opto-22 Compatible
24 Relay and 24-ch Isolated D/I Boards
CIRCUIT MODULE, 24-CH TTL DIO USB Module
