Water damage rarely announces itself. A slow drip from a water heater fitting, a washing machine that overflows while you’re upstairs, a basement that takes on moisture during a heavy rain — these situations develop quietly and quickly. By the time you see the water, it’s already been sitting long enough to matter. The Water Overflow Sensor Attachment is a simple add-on designed to give you an earlier signal, using the loud personal alarm you may already own.
Who This Sensor Attachment Is For
This attachment is built for people who already own a PAL-1 or PAL-1LIGHT personal alarm and want to put it to work as a fixed flood detector. That includes homeowners who want low-cost monitoring near a water heater or sump pump, renters who can’t drill into walls for permanent leak sensors, and anyone who has dealt with water damage before and wants something in place before it happens again. It’s a single-zone solution — useful if you have one specific spot you’re worried about.
Is It the Right Fit for You?
Choose It If You Want
- An affordable way to add flood detection to an alarm you already own
- Simple, immediate alerting with no app, Wi-Fi, or hub required
- A sensor you can reposition without tools or permanent installation
- Coverage for one specific spot — a drain, an appliance corner, a basement edge
Consider Another Option If You Need
- A standalone water alarm that works without a separate device
- Remote phone notifications when you’re away from home
- Coverage for multiple rooms or water sources at once
- Integration with a smart home system
Water Overflow Sensor Attachment Features and Benefits
- 27-Inch Sensor Cable: The 27-inch cable gives you enough reach to position the detection tip exactly where water would collect first — on the floor beside a water heater, behind an appliance, or along a basement wall.
- Suction Cup Mount: The included suction cup lets you fix the sensor body to a smooth surface like a tile wall or appliance panel without adhesive or hardware, making it easy to reposition as needed.
- No App or Wi-Fi Required: When the sensor contacts water, it completes a circuit that triggers the connected alarm immediately — no notification chain, no delay, no account setup.
- Connects to PAL-1 or PAL-1LIGHT: This attachment is designed specifically for those two alarm units. If you already own one, this extends it into a fixed flood detector for a fraction of the cost of a separate device.
- Lightweight and Compact: At 0.1 lbs with a slim 0.13-inch profile, it sits unobtrusively wherever you place it and doesn’t require any dedicated space.
How the Water Overflow Sensor Attachment Compares
This attachment occupies a specific niche — here’s how it sits alongside two common alternatives.
| Feature | Water Overflow Sensor Attachment | Standalone Water Alarm | Smart Leak Sensor |
|---|---|---|---|
| Works With | PAL-1 or PAL-1LIGHT required | Self-contained, no extra device | Smart hub or app required |
| Alert Type | Loud alarm from connected unit | Built-in audible alert | App notification, sometimes audible |
| Remote Alerts | No | No | Yes, if in range |
| Installation | Suction cup, no tools | Place on floor, no tools | Varies; some require setup |
| Best For | Extending an alarm you already own | Simple single-zone coverage | Away-from-home monitoring |
What’s Included and a Note on Compatibility
What’s in the Box
- Water Overflow Sensor Attachment (black)
- Suction cup mount
- 27-inch sensor cable
Compatibility and Care
This attachment requires a PAL-1 or PAL-1LIGHT alarm to function — it is not a standalone device and will not trigger any alarm on its own. Once connected, position the sensor cable tip at the lowest point in the area you’re monitoring so water contacts it as early as possible. Keep the sensor cable end free of debris and check it periodically to confirm the tip remains at floor level and hasn’t been moved.
Legal Notes
Personal alarms and flood sensor attachments are not restricted items. No special permits or considerations apply.
Water Overflow Sensor Attachment: Frequently Asked Questions
Does the Water Overflow Sensor Attachment work as a standalone alarm?
No. The Water Overflow Sensor Attachment is an add-on, not a self-contained device. It must be connected to a compatible PAL-1 or PAL-1LIGHT personal alarm to function. When water contacts the sensor, it signals the connected alarm to sound. If you don’t already own one of those units, you’ll need to purchase one separately.
How long is the sensor cable on the Water Overflow Sensor Attachment?
The sensor cable is 27 inches long. That gives you enough reach to mount the alarm body at a convenient height — on a wall, an appliance, or a nearby shelf — while the sensor tip rests on the floor or at the lowest point where water would first appear. Positioning the tip at the lowest reachable spot gives you the earliest possible warning.
Can I move the sensor to different locations?
Yes. The suction cup mount attaches to smooth surfaces without adhesive, so you can reposition the sensor as your needs change — moving it from beside a washing machine during laundry to near a sump pump during rainy season, for example. No tools or permanent installation are required.
Will this sensor send a notification to my phone?
No. This system is fully local — there’s no Wi-Fi, no app, and no remote connectivity of any kind. When water touches the sensor, the connected alarm sounds immediately and loudly. That works well if someone is home to hear it. If you need alerts when you’re away, a smart leak sensor with app integration would be a better fit for that purpose.
Add Early Flood Warning to an Alarm You Already Own
If you have a PAL-1 or PAL-1LIGHT and a spot in your home where water has been a concern, this attachment is a straightforward way to put that alarm to a second use. Add it to your cart and pair it with the alarm you already have on hand.

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