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From inside (document excerpt):
Wireless Rain Sensor Series Rain Sensor, Model TWRS-I and Rain/Freeze Sensor, Model TWRFS-I User’s Guide English Español Français Contents Page Getting Started 2 Receiver Module Features . 4 Installing the Receiver Module . 5 Initial Sensor System Test . 8 Sensor Module Features 9 Rain Sensor Site Selection . 10 Installing the Sensor Module . 11 Freeze Sensor Site Selection 13 Set Centigrade or Fahrenheit Scale .
14 Set Temperature Activation Threshold 14 Water Conservation Feature 15 Smart Bypass Feature . 16 Contents . Page Water Delay Feature 16 Signal Strength Display Feature . 16 Battery Strength Display Feature 17 Dry Out Feature 18 Fail Safe Feature . 18 Turn Receiver Module Off and On . 20 Set or Restore the Sensor Address Code 20 Sensor Module Battery Replacement . 21 Troubleshooting 22 Specifications 24 Warranty Information . 25 Introduction The Toro wireless rain sensor system, model TWRS-I for rain sensing and TWRFS-I for rain and freeze sensing, is a powerful, water conservation and management tool that connects your automatic irrigation system to actual environmental factors vital to the health and maintenance of your landscape. Without sensor input, the controller simply turns the sprinklers on and off based on a routine irrigation schedule. Linking controller operation to real-time rain and/or freeze conditions eliminates unnecessary irrigation and dramatically reduces water consumptionall without compromising the health and beauty of your landscape. Andit’s wireless. No cable to run or holes to drill. Simple installation and setup delivers reliable, intelligent sensor control in a matter of minutes. i The wireless sensor system is comprised of a programmable, weather-resistant receiver module and a sensor module with built-in transmitter. The receiver installs next to the irrigation controller and connects to the controller’s 24 Vac power source and sensor input terminals (if equipped) or splices directly into the irrigation valve common wire. The sensor module is installed within range of the receiver in a location that best represents the landscape’s sun/shade exposure and can provide reliable communication from the sensor to the receiver. Once activated by preset rain or low temperature levels (rain/freeze model only), the sensor communicates to the receiver via ultra high-frequency radio signal. The receiver responds by placing the controller’s automatic watering schedule on hold or by simply opening the valve common circuit to prevent sprinkler operation. When watering is once again needed, the sensor system automatically resets, allowing automatic irrigation to resume. More than just an accurate rain switch, the wireless sensor system actually adapts to your landscape with the simple, yet sophisticated Water Conservation feature. Just choose the conservation level that corresponds to your landscape soil type and the sensor location. A dry-out period, adjusted for actual rainfall duration, is automatically placed after the sensor system resets to effectively delay automatic watering until it is actually needed. Other standard features include a Smart Bypass button that gives you manual control over the sensor system with a single touch, system status indicators to see at glance that your sensor system is active and watering is on hold, watering delay to postpone automatic watering from 1 to 5 days, air temperature displayed for rain/freeze sensors and even a Fail-safe mode to allow irrigation in case the sensor system is not performing properly. TM 1 English Getting Started The wireless rain sensor system is designed for easy installation, setup and years of trouble-free operation. In most cases, the system components can be installed and fully operational within minutes. All you will need is a Phillips screwdriver and basic do-it-yourself skills. If you have problems with any portion of the installation, or the product does not seem to function properly, refer to the Troubleshooting section on page 22 first. If the problem is not listed, or the remedy does not help, call Toro Irrigation at 1-951-688-9221 or contact your local Toro distributor for assistance. For more information on this and other Toro irrigation products, visit the Toro web site at www.toro.com. Here’s all there is to it: Step 1 Step 2 The receiver is installed and connected to your irrigation system controller. See page 5. 2 The sensor and receiver are tested at close range to verify operation. See Page 8. Step 3 Step 4 Step 5 Step 6 The sensor module is installed. See page 11. The operating features are set to your preferences. See page 14. 3 English A sensor installation site is chosen and the system is tested again to verify operation. See page 10. The sensor is adjusted to the preferred rainfall activation level. See page 11. Receiver Module Features 1 Setup ButtonAccesses the receiver setup and operating features. 3 2 Adjust ButtonSelects settings within the receiver setup and operating features. 3 Mast AntennaAdjusts easily for best signal reception. 4 Digital DisplayHigh-resolution LCD screen provides visual 2 reference for sensor system operating features. 1 5 Sensor Status Indicators Rain status and Freeze status (TWRFS-I only) indicators illuminate when the sensor system is active and automatic watering is on hold. 6 Smart Bypass ButtonMulti-functional use. Pressed to bypass sensor operation, allowing automatic watering to resume. Switches the Water Delay feature on and off. 7 Water Conservation LEDsIndicate the Water Conservation feature level selected (Minimum, Medium or Maximum). 8 Hinged CoverOpens downward for receiver control access. Closed position protects receiver when installed outdoors. TM 4 5 6 7 8 4 Installing the Receiver Module Important: Installation of this product must comply with national and local building and electrical codes. For assistance, contact a professional irrigation system contractor in your area. The receiver module is suitable for either indoor or outdoor installation. Select a location next to the controller that provides the following conditions: · The display screen is clearly visible and the control buttons are easily accessed. · The connection cable can reach the controller wiring terminal strip without straining. · The antenna will be unobstructed and is able to be adjusted. 1. Install one of the provided stainless steel screws into the wall at the intended receiver location. Leave a 3mm gap behind the screw head. Note: Use screw anchors if installing the receiver on drywall or masonry. 2. Hang the receiver on the screw ensuring the keyhole slot drops down onto the screw shaft. 3. Install a second screw through the lower tab to secure the receiver. 4. Route the connection cable through the bottom of the controller cabinet to the wiring connection terminals. Important: If the receiver module is installed outdoors, be sure to keep the cover in the closed position when you do not need to view the display or access the control buttons. 5 English Figure 1 Connecting the Receiver Wires CAUTION: The receiver requires continuous 24 Vac power for operation. Connecting to higher power will result in irreparable damage. Ensure that power to the controller has been removed prior to connecting the receiver wires. The sensor system is designed to work with most makes and models of irrigation controllers. · If your controller is equipped for a sensor connection, follow the steps in Wiring Procedure I. · If your controller is not equipped for a sensor connection, use Wiring Procedure II on page 7. Wiring Procedure I (sensor-ready) Figure 2 – Normally-closed Sensor Note: Refer to your controller user’s guide to determine the type of sensor required: Jumper Normally Closed (NC) or Normally Open (NO). PUMP/ 1. Locate the sensor connection terminals, 24 VAC MV COM SENSOR 3 4 1 2 usually labeled “SENSOR ” or “SN. ” Remove the jumper connector (if installed). 2. Attach the White wire to either Sensor Red terminal (disregard +/ polarity if labeled).