WeatherTRAK 2-Wire Controller Installation Guide
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WeatherTRAK 2-Wire Devices
The WeatherTRAK 2-wire controller can communicate with all of the following HydroPoint 2-wire devices:
• Single and dual valve decoders
• Flow sensor decoders
• Master valve decoders
• Pump start decoders
Total Supported Devices and Limits
The following table lists the total numbers of devices by type that can be connected to a WeatherTRAK 2-wire
controller. The WeatherTRAK 2-wire controller can support up to 110 device loads on the 2-wire path within
the layout and length limits outlined later in this section. A device load indicates the amount of electricity
required to sufficiently power the decoder.
Note: The device load requirements change between decoder types.
The load value/rating for each 2-wire device is shown in the table below.
Two-Wire Device Type Total Device Loads Milliamps
Valve decoder (one and two valve)
Master valve decoder 4 ½ per decoder 0.5mA
Pump start decoder 4 ½ per decoder 0.5mA
NOTE: Limits for Release 7.10.x and 8.6.x of the WeatherTRAK 2-wire Controller:
• 96 Stations
• Total of 4 Master Valves (mix of 2-wire and Direct Connect)
• Total of 4 Flow Sensors (mix of 2-wire and Direct Connect)
• 4 Pump Start Decoders (each pump start decoder reduces maximum number of stations by 1)
NOTE: Unused ports or serial numbers on decoders that do not occupy a station address do not count
towards the maximum station count.
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