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Hydro-Rain’s HRC 100 wireless rain and freeze sensor saves water by automatically suspending irrigation watering cycles when it rains or freezes or both!


FEATURES AND BENEFITS
  • Easy No Tools Required—Rain gutter mount bracket is equipped with a tool free bolt system that is both quick and intuitive to install.
  • Adjustable Moisture Activation—1/8", ¼", ½", ¾", 1" rainfall settings for variable climates.
  • Hygroscopic Discs—Absorb water to activate rain switch.
  • Reliable Freeze Sensor Option—Shuts off timer when temperature drops to 37°F, protecting vegetation from the effects of freezing water.
  • Universal—For use with most brands of 24 Volt sprinkler timers.
  • Quick Rain Gutter Mount—No tools required for mounting the sensor to a rain gutter.
  • Constant Communication—Every 30 seconds, (HRC 300/390 models), a signal between the transmitter and receiver for accurate timed water metering. All other timers transmit updated signal every 15 minutes.
  • Transmission Range—Over 300 feet (91.4 m) line of sight.
  • Manual Bypass Control—Allows for deactivation during sprinkler system maintenance.
  • Dry Vent—Allows air to be circulated or dampened for fast or slow dry, effectively reducing time for the next watering cycle.

 

 

OPERATING SPECIFICATIONS
Sensor Type: Industry-standard hygroscopic discs
Rain Sensitivity: Adjustable nominal 1
?8" to 1" (3-25mm)
Freeze Sensitivity: 37°F (2,7°C) +/- 3°F
Operating Temperature: 14°F to 140°F (-10°C to
60°C)
Housing Material: UV-resistant engineered polymer
Receiver Power: 22-28 VAC
Transmitter Power: Two CR2032 3V cell, 5-year life
(typical use)
DIMENSIONS
Transmitter: Height: 4" (10,1 cm)
Length: 3.15" (8,0 cm)
Receiver: Height: 3.75" (9,5 cm)
Length: 1.1" (2,7 cm)
ELECTRICAL SPECIFICATIONS
AC Supply: 24~26 VAC
Relay Contacts Output: Normal open & normal
close 3A@24 VAC
UL Listed, FCC, CE

OPERATING SPECIFICATIONS
Sensor Type: Industry-standard hygroscopic discs
Rain Sensitivity: Adjustable nominal 1
⁄8″ to 1″ (3-25mm)
Freeze Sensitivity: 37°F (2,7°C) +/- 3°F
Operating Temperature: 14°F to 140°F (-10°C to
60°C)
Housing Material: UV-resistant engineered polymer
Receiver Power: 22-28 VAC
Transmitter Power: Two CR2032 3V cell, 5-year life
(typical use)

DIMENSIONS
Transmitter: Height: 4″ (10,1 cm)
Length: 3.15″ (8,0 cm)
Receiver: Height: 3.75″ (9,5 cm)
Length: 1.1″ (2,7 cm)
ELECTRICAL SPECIFICATIONS
AC Supply: 24~26 VAC
Relay Contacts Output: Normal open & normal
close 3A@24 VAC
UL Listed, FCC, CE

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