Decoder technology has been the preferred irrigation control technology in Europe for two decades. Decoder systems use a single pair of wires to operate a number of stations with individual decoders connected along a two-wire path. Each decoder is its own small waterproof control unit that is separately addressable with both power and signal sent over the same pair of wires.
Decoder systems offer many benefits to both the installer and operator. First, less copper wire and associated labor reduces cost and simplifies troubleshooting. Repair of damaged cable is simple in the extreme compared to multi-wire. In addition, stations can be easily added in the field after initial installation, without digging in new wire back to the controller.
Best of all, decoder systems are easy to operate. User operation of the ICC with decoders is identical to that with multi-wire modules fitted. Only in troubleshooting are diagnostic facilities slightly different. At installation, each decoder is quickly and simply programmed in the field with a unique address, using terminals on the driver module, then wired between the solenoid and the main two conductor cable.
For the professional installer, the Tonick Decoder Programmer/Tester is available.