









🚨 Stay dry, stay smart—leak detection that’s miles ahead!
The YoLink Water Leak Sensor 2 offers industry-leading 1/4 mile LoRa wireless range and a 2+ year battery life, ensuring reliable water leak detection without relying on WiFi or power. Featuring a 4.2-foot rope-style sensor cable with extendable options and a powerful 105dB siren, it integrates smoothly with Alexa and IFTTT for smart home automation. Quick to install with QR code setup, this sensor keeps your property safe with uninterrupted alerts—even during internet or power outages. Requires YoLink Hub for operation.
| Battery Description | Not Specified |
| Number of Batteries | 2 AAA batteries required. (included) |
| Voltage | 3 Volts |
| Control Method | App |
| Noise Level | 105 Decibels |
| Mounting Type | Wall Mount |
| Maximum Range | 1320 Feet |
| Sensor Technology | Rope Sensor |
| UPC | 850024791091 |
| Manufacturer | YOSMART |
| Part Number | YS7904-UC |
| Item Weight | 3.17 ounces |
| Product Dimensions | 3.27 x 0.59 x 1.22 inches |
| Item model number | YS7904-UC |
| Batteries | 2 AAA batteries required. (included) |
| Style | Without Hub |
| Material | Plastic |
| Item Package Quantity | 1 |
| Coverage | 1000 Feet(Open Air) |
| Switch Style | Temperature Switch |
| Usage | Amateur, Inside, Professional |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Description Pile | Not Specified |
| Warranty Description | 2 Years |
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