Landscape Management
Make any irrigation controller soil-moisture smart — without replacing it.
Traditional irrigation controllers run on fixed schedules, watering whether the soil needs it or not. Smart irrigation changes that by letting the soil decide — reading moisture status before each cycle and skipping it when conditions are already adequate.
According to the Irrigation Association, smart irrigation controllers reduce overall water usage by 30% or more. The WATERswitch makes that possible for any existing controller — requiring only the installation of a soil moisture sensor and the compact module itself.
WATERswitch Control Module
An add-on module that connects to any existing irrigation controller or valve and suspends watering cycles based on soil moisture. Simple installation, no controller replacement, no seasonal reprogramming.
Features
- Prevents irrigation when soil moisture exceeds the set point
- Nine-position adjustable set point — adapts to any plant or soil type
- No seasonal adjustments required
- Status indicator light shows current soil moisture state
- Includes one WATERMARK soil moisture sensor
- WS-DC — for battery-powered controllers with a sensor circuit
- WS-AC — for standard AC controllers via sensor circuit or solenoid interrupt
Soil-Moisture Smart, Without the Complexity
Sensor Reads the Soil
The included WATERMARK sensor is installed in the root zone and continuously monitors soil water tension at the set depth.
Module Checks Before Each Cycle
Before each scheduled irrigation event, the WATERswitch module reads the sensor. If soil moisture is above the set point, the cycle is bypassed.
Water Only When Needed
Irrigation resumes automatically when the soil dries to the threshold — no manual overrides, no seasonal adjustments, no intervention needed.
Product Resources
Works With Existing WATERMARK Sensors
The WATERswitch uses the same proven WATERMARK 200SS sensor technology. If you already have WATERMARK sensors installed, the module can integrate with your existing setup.
Learn About WATERMARK Sensors →