Printer friendly page

Hydro-Rain HRC-100-RS-RF Wireless Rain or Rain/Freeze Sensor

SKU: 180105

Save 43% · Retail: $87.63

In Stock and Ready to Ship

Ships From Price Qty
Order From Manufacturer
Available to Ship in 3-4 weeks

About the Hydro-Rain HRC-100-RS-RF

The Hydro-Rain HRC-100-RS-RF is a Rain and Freeze Sensor for Sprinker System Controllers doesn't require hardwiring to the Contoller for installation flexibility. The HRC 100 series wireless sensors are designed to conserve water by suspending irrigation when it rains. HRC 100RSRF is also capable of switching off sprinklers during freezing weather conditions. The quick rain gutter mount and adjustable moisture activation capabilities of the HRC100RSHW are two of the many features included in these Rain & Rain Freeze sensors. For use with HRC-100 Serries Controllers

Product Details

Product: Parts and Accessories
Use: Water
Faucet Part Feature: Electrical and Sensors
Mpn # HRC-100-RS-RF
Weight 1.00 lbs.

Product Features

  • Fast to Program-Large dial, oversized LCD display, make programming quick and easy.
  • Manual Advance-One-button station affords convenience of quick select and advance during manual watering.
  • Indoor/Outdoor UL Cabinet-Weather tight and locking for safety, security and peace of mind.
  • Three Year Unconditional Parts Warranty- Hydro-Rain warrants that its product will be free from defects for a minimum of three years from the date of purchase.
  • Station Timing: From 1240 minutes
  • Automatic Starts: Up to 12 start times per day
  • Programming Schedule: Days of week, watering intervals and odd/even days
  • Rain Delay: Setting for 24, 48 and 72 hours
  • Water Budgeting: Adjusts for seasonal watering demands (10% to 200% in 10% increments)
  • Transformer Output: 24VAC/26VAC, 600mA
  • Battery Backup: 3V lithium (program saved in non-volatile memory)
  • Fast to Install-Factory-installed plug-and-go power cord means no in-field transformer wiring is required.
  • Surge Protection: Primary input has built-in MOV (metal oxide varistor), valve wire MOV protects against lightning strikes
  • Hinged Panel-Door allows quick and easy access to valve wiring (shown on back).
  • Watering Budgeting-Match seasonal watering requirements by increasing or decreasing the durations of the stations in any of the two programs from 10%~200% of base schedule.
  • Rain Delay-Rain sensor bypass technology allows manual or automatic rain delay of 24-hours, 48-hours and 72-hours.
  • 24 Volt Out Rain Sensor Terminals-Make installation of wireless rain sensor receiver quick and convenient.
  • Three Programs-Programs A, B and C offer multi-use and flexible watering schedules by days of the week, even or odd days, or at intervals of 1 to 32 days.
  • 4 Start Times Per Program-Flexibility to manage schedules for variable plant requirements and soil types.
  • M18 3/8in Compact Impact Wrench with Milwaukee 4-Pole Frameless Motor maximizes efficiency and run-time


4.5 out of 5 rating is our rating for PlumbersStock, we got that rating because we have lots of experience and great people with expertise in plumbing. BUT WE WANT YOUR HELP. This product doesn't have any reviews yet, and we don't want to write our own reviews. It is more valuable to us that the customers get to share their experience with our products. Please, if you have any experience with this product, take a moment to share and help someone else who is trying to make a decision. Thank you!

Questions & Answers


Thank you for visiting We appreciate you asking for help on our Hydro-Rain HRC-100-RS-RF Wireless Rain/Freeze Sensor. To replace the batteries, just remove the black rubber cover from beneath the sensor/transmitter. Once the battery mount drops down (attached with a wire), replace both batteries. Make sure the + sides of the batteries point to the + indicated on the mount. Once inserted properly, insert the battery mount and replace the cover. Make sure it is seated properly. For more information, feel free to check the Instruction Manual. If you wish to purchase this product, please click Add To Cart. Thank you for shopping with – the perfect place to find high-quality products at low, low prices!


Good day! Thank you for your question about our Hydro-Rain HRC-100-RS-RF Wireless Rain or Rain/Freeze Sensor. To change the batteries, remove the black rubber cover underneath the sensor/transmitter. The battery mount should drop down, attached with a wire. Replace both batteries, making sure the + side of the batteries point to the + indicated on the mount. Insert the battery mount and replace cover, making sure it’s seated properly. Neither the rain nor freeze sensor needs to be removed or covered during the winter. All parts are easily replaceable if they become damaged or lost. The spindle assembly is designed to stay with the cap. Do not pull them apart. You may want to check this Instruction Manual for more details. If you need further assistance, you can call Hydro-Rain @ 801-299-5550 or @ 888-493-7672. We hope this helps. Thank you for visiting Have a fantastic day!

Shopper Award