When a controller is installed or replaced, what else must be installed?

When a controller is installed or replaced, what else must be installed?

• A. Rain Moisture Sensor
• B. Zone Valves
• C. Backflow Preventer
• D. Pressure Regulator

Answer: (A)

Pairing a controller with a rain moisture sensor is essential because the sensor tells the controller to pause irrigation when rain is detected. This prevents watering during wet weather, saves water, and helps meet local codes or rebates. The controller can operate automatically only if it has a rain sensor input and the sensor is installed and wired (or paired, in wireless setups). Other components like backflow preventers, zone valves, and pressure regulators are important for safety and performance, but they aren’t automatically required simply because you install or replace a controller. The rain sensor directly relates to how the controller manages watering in response to weather.

Pairing a controller with a rain moisture sensor is essential because the sensor tells the controller to pause irrigation when rain is detected. This prevents watering during wet weather, saves water, and helps meet local codes or rebates. The controller can operate automatically only if it has a rain sensor input and the sensor is installed and wired (or paired, in wireless setups).

Other components like backflow preventers, zone valves, and pressure regulators are important for safety and performance, but they aren’t automatically required simply because you install or replace a controller. The rain sensor directly relates to how the controller manages watering in response to weather.