The Pertronic AA Loop Responder 8 Way Opto-Isolated IP Board (F100ZIPB) provides an optically-isolated input for Pertronic Loop Responder modules.
The product has eight isolated interface circuits: One interface for each loop responder input.
Each interface has a red LED to indicate input activation (Non – latching), and has a 1K5 current limiting resistor in the input of the isolated circuit.