Product Description Hunter ICD-SEN Decoder 2-input sensor decoder with surge suppression and ground wire The ICD-SEN Sensor Decoder is a special type of decoder module designed to accept inputs (from sensors), rather than outputs to stations. Each ICD-SEN has 2 sensor ports, which can report sensor status back up the two-wire path to the ACC controller. Sensor Decoders are also set up at the controller first, using the Programming Port on the output module. Sensor Decoders have a unique series of setup screens in the controller display. ICD-SEN decoders may also be programmed and set up with the ICD-HP handheld programmer. Height: 3-5/8″ Width: 1″ Depth: ” Click for Hunter ACC Product Line Brochure