1/2/4/8 Arduinos Pi Channel Relay Board Module Selectable High Low 3.3 5 12V 24V

1/2/4/8 Arduino Pi Channel Relay Board Module Selectable High Low 5V 12V 24V

Absolute Process Instruments API 4058 G Transmitter w/Base 700-HN126

Absolute Process API 4059 G Field Selectable Bridge 115v-ac

W BOX OE-RLY6125A Relay 6/12VDC Selectable 5A 220VAC/28VDC

W BOX OE-RLY12245A 12/24VDC Selectable 5A, 220VAC/28VDC Relay

8 Channel Optocoupler Transmit Component 5V 12V 24V Selectable 30A Load PLC