191218 Walchem Relay Card, 4 powered, 4 dry

Relay Card, 4 dry contact, 4 opto-isolated

Relay Card, 4 Powered, 4 Opto-Isolated

Relay Card, 7 Powered, 1 dry

Relay Card, 6 powered, 2 dry

Spare, W900 Relay board, 4 Powered-4 Dry The 192615 Walchem Spare, W900 Relay Board, 4 Powered-4 Dry is a replacement relay board specifically designed for use with Walchem's W900 series controllers...