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How do sensor-activated splash pads work?
Quick answer
Sensor-activated splash pads use motion or push-button sensors to trigger jets only when kids are present, conserving water and power. A typical install pairs PIR or radar motion sensors with a programmable logic controller that opens solenoid valves on demand for 5-15 minute play cycles.
Modern splash pads increasingly rely on activation sensors instead of constant flow. The most common setup uses a stainless-steel push-button bollard wired to a programmable logic controller (PLC). When a kid slaps the button, the PLC opens solenoid valves in a sequenced choreography for a preset run-time — often 5, 10, or 15 minutes — then automatically shuts off. More advanced installs use passive infrared (PIR) or microwave radar motion sensors mounted on shade structures to detect activity and run jets in zones where kids actually are. Some flagship installations layer in occupancy counting and let the PLC scale jet pressure up or down based on crowd size. Benefits: 30-60% water savings versus constant-flow designs, lower power bills, and longer equipment life. Downsides: more complex maintenance and occasional false-trigger issues from leaves or wind.