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Onerbl 9V AC Adapter for FloodStop Leak Detector

$22.79 on Amazon.com (as of October 19, 2026, 2:23 AM EST) View details ↗

Keep your FloodStop OnSite Pro water heater leak detector running smoothly with this high-quality 9V AC adapter from Onerbl. Designed for reliability, this replacement power supply ensures seamless operation by converting standard AC power to the 9V DC output your device requires. Whether you're traveling or need a backup, this adapter provides a dependable solution to keep your leak detection system active.

Compatible with multiple FloodStop models—including the FS3/4C, FS3/4NPT, FS100NPT, FS125NPT, and FS1/2NPT—this adapter is built for durability and tested for performance. Its Class 2 switching power design ensures safe and efficient energy delivery, making it ideal for both residential and commercial water heater protection systems. Trust Onerbl for a replacement part that meets your device’s exact power requirements without compromising quality.

Output Voltage9V DC
CompatibilityFloodStop OnSite Pro FS3/4C, FS3/4NPT, FS100NPT, FS125NPT, FS1/2NPT (and select
Power TypeClass 2 Switching Power Supply
InputAC (standard wall outlet)
Which FloodStop models is this adapter compatible with?
This adapter works with FloodStop OnSite Pro models including FS3/4C, FS3/4NPT, FS100NPT, FS125NPT, and FS1/2NPT (and select V4 variants).
Can this adapter be used for travel or backup power?
Yes, this adapter is designed for portability and can serve as a reliable travel or backup power solution for your FloodStop leak detector.
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