Underhill 2 Wire Decoder | TW-TK-DEC-1

• Convert To 2-Wire, Control Up To 63 Stations
  • The Underhill 2WIRE Universal Decoder Module is designed to give any controller the superior features of decoder technology. The module and universal sender (pictured at right) install neatly inside your favorite controller. Or you can use a separate enclosure anywhere along the two-wire path, up to 3,000 feet away from the controller.
• No Grounding Necessary
  • Underhill decoders quickly install anywhere along a 2-wire path, and they require no grounding. Over 150,000 of these decoders are currently installed in irrigation systems all over the world, offering proven reliability and versatility, while saving time and money. Each decoder can control one or two valves per station. Use DBY waterproof connectors (4 included with each decoder) or equivalent.

• Maximum Number of Stations: Hunter® ICC: 48, Universal: 63
• Wire Size: 18 AWG - 12 AWG
• Maximum Distance Between Module and Decoder: 1800 to 5300 ft. (550 to 1600 m) depending on wire size (see chart on back)
• Maximum Distance Between Controller and Externally Mounted Universal Decoder Module: 3,000 ft. (900 m)
• Maximum Simultaneously Active Valves: 2 (1000 ft. max distance between stations)
• Maximum Continuous 2-Wire Current: 1.1 Amps AC
• Universal Decoder Voltage to Module: 22V-32V (Low voltages reduce maximum distance to decoders. See manual for transformer specifications.)

• Internal Mounting
  • Connect the Universal Decoder Module to the controller transformer (24v-32v), 2-wire path and ground. Set the station addresses of the Universal Senders and connect them to the controller terminal strips and the Universal Decoder Module.

*NOTE: See manual for transformer specifications.

• External Mounting
  • Connect anywhere along the 2-wire path (within 3000 feet of controller) where AC power is available. Connect the transformer to AC power, and run a 2-wire branch to the controller. Set the station addresses of the Universal Senders and then connect them to the controller terminal strips and the 2-wire path.