Wiring Cable for Siren 3The Wiring Cable 2 accessory is used to connect additional wired sensor inputs and to also drive additional outputs to your Siren 3 Pro device. Each wire has unique functionality to support the corresponding sensor.Features:. Compatible with Siren 3 Pro only. Cable length: 3 ft.. Wire length: 6 in.. Direct connection to Siren 3 Pro on bottom-right connector on device. Outputs: 5. Inputs: 7