Weathermatic SLW1 Wired SmartLine Weather Station Sensor

The Weathermatic SLW1 is a wired on‑site weather station designed for SmartLine irrigation controllers. It records and processes local temperature and rainfall to enable ET-based watering and automatic Smart mode adjustments, preventing irrigation during rain or freezing conditions.

• Adjustable rain shutoff: factory 1/8" setting; selectable from 1/8" to 3/8" (3–19 mm) to stop irrigation after the specified precipitation.
• Freeze protection: activates at 37°F (1.5°C) to pause irrigation and notify the controller until temperatures recover.
• Reliable operation: microprocessor-driven with onboard diagnostics; no onboard batteries—operational power is provided by the controller.
• Easy installation: supplied with 35 ft (10.7 m) UV-stable cable and adjustable aluminum mounting arm for gutter or surface mounting; maximum controller distance 200 ft.
• Daily ET calculations: computes evapotranspiration on-site and transfers daily deficit values to SmartLine controllers to optimize run times and conserve water.
• Serviceable design & warranty: replaceable rain disk assembly and a two-year manufacturer limited warranty for peace of mind.

Compatible with SmartLine controllers and intended for commercial or residential outdoor installation, the SLW1 simplifies irrigation management by delivering on-site weather intelligence that protects landscapes and reduces water waste.