WATER DETECTOR SOUND ALARM KIT
Water Detector KIT - WD-2 This kit detects the presence of water or any liquid. When a liquid hits the sensor, this kit emits a sound from the speaker. Use it on any type of liquid.
Power requirement 9v battery or 8 to 15 volts DC. (Must be well filtered)
PCB size: 2" x 1".
Sensor size .7" x 2.2"

Here is the instruction sheet for the WD-3 kit.
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WD-3 Kit $9.95 Quantity:

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Rainbowkits - 121 E. North St. - New Ross IN 47968 - (765) 230-2301