HOW IT WORKS
AquaSensor-S1 sits flat on any surface where you want eyes on water. Four SS316 stainless steel probes on its underside form a continuous detection grid — the moment water bridges any two probes, the sensor wakes up and pushes a leak event over UBILINK to your Custos Gateway, which dispatches alerts and (if you've configured it) tells your AquaGuard to close the main valve.
For locations where the leak might start in a tight gap rather than out on the floor — under a fridge, behind a cabinet, beside a hot-water tank — drop the sensor into its Cradle for AquaSensor-S1 (Sold Separately) and snake the slim plug-in probe into the gap. Now you have two detection points from one sensor: the flat surface under the cradle, and wherever the probe tip sits.
PRODUCT HIGHLIGHTS
- Up to 10 years of battery life on 2× AA alkaline cells. Designed for long-term protection. Battery is easy to replace, ensuring uninterrupted leak monitoring for years to come.
- 4× SS316 marine-grade stainless steel probes on the underside. Detects water from any orientation — flat on a surface, tipped over, or mounted on a cradle. SS316 resists corrosion in soft water, hard water, and mildly chemical environments where lesser probes corrode and false-alarm within months.
- Dual-point detection. The optional plug-in Water Detection Probe lets a single AquaSensor-S1 cover two locations at once — for example, the body of the sensor under a washing machine plus the probe tip in the floor drain pan beside it. One sensor, two leak zones.
- Real-time battery reporting. Battery percentage flows continuously to the Gateway and shows up live in the Custos App — no surprise dead sensors, no annual replacement guessing.
- Ultrasonic Leak Detection + Freeze Alerts Advanced ultrasonic technology identifies even the smallest leaks with precision. Built-in temperature monitoring issues alerts when surrounding conditions approach freezing.
- Advanced UART Interface for System Expansion Equipped with a built-in UART interface that allows future enhancements, integrations, and added features for advanced users who want more control.
IP66 rated. Place it under sinks, near washers, by water heaters, in basements, mechanical rooms, or anywhere else water shouldn't be — including outdoor cabinets and damp environments. - Compact and unobtrusive. 80 mm × 42 mm × 25 mm (≈ 3.2″ × 1.65″ × 1.0″) and 120 grams. Fits in places competing sensors physically can't.
- No Wi-Fi setup. No wiring. No tools. Pair once with the Custos App, place where you need it, forget it for a decade.
- Tamper-proof under normal placement. No detachable cover, no exposed buttons that get knocked.
- 24/7 multi-channel alerts via Custos Gateway: push notification, SMS, phone call, and email triggered the moment any of the four probes detect water.
- 18-month warranty + lifetime technical support.
SPECIFICATIONS
| Detector method | 4× underneath SS316 stainless-steel probes + optional plug-in probe |
| Wireless protocols | Ubilink · LoRaWAN · UbilinkPro |
| Battery | 2× AA alkaline (1.5 V each) — user-replaceable |
| Battery management | Real-time battery reporting |
| Battery life expectancy | Up to 10 years |
| Operating temperature | 0 °C – 55 °C (32 °F – 131 °F) |
| Operating humidity | 5 % – 90 % |
| Ingress protection | IP66 |
| Region availability | US / CA / MX / JP |
| Certifications | FCC, ISED |
| Dimensions | 80.18 mm × 41.90 mm × 25.30 mm (≈ 3.16″ × 1.65″ × 1.00″) |
| Weight | 120 g (≈ 4.2 oz) |
INSTALLATION NOTE
Place AquaSensor-S1 on a flat surface where water from a leak would first pool — typically the lowest point of the floor area you want to protect. The four SS316 probes are on the underside of the device.
For dual-point coverage, drop the sensor into the Cradle for AquaSensor-S1 and connect a Water Detection Probe. The probe's slim form factor lets you reach into gaps the sensor body can't.
Pairing: To add a sensor to an existing Gateway, open the Custos App, navigate to Add Device → AquaSensor-S1, and follow the in-app prompt.
