









🚪🔒 Secure smarter, live freer — the future-proof door sensor your home deserves!
The YoLink LoRa Smart Door & Window Sensor 3-Pack leverages advanced LoRa wireless technology to deliver ultra-long-range connectivity (up to 1/4 mile open air) with minimal power consumption, enabling up to 5 years of battery life. Designed for effortless installation with peel-and-stick 3M tape and QR code setup, it offers customizable alerts including door left-open reminders and supports device-to-device pairing for offline automation. Compatible with Alexa, IFTTT, and Home Assistant (hub required for full features), this sensor pack empowers professional-grade home and business security without monthly fees.




| Manufacturer | YoLink |
| Part number | YS7704-UC*3 |
| Item Weight | 66 g |
| Package Dimensions | 17.3 x 16.1 x 4.5 cm; 66 g |
| Batteries | 6 AAA batteries required. |
| Item model number | YS7704-UC*3 |
| Color | 3-pack without hub |
| Style | 3 Door Sensors |
| Power source type | Battery Powered |
| Voltage | 3 Volts |
| Installation Method | Mounting Tape |
| Item Package Quantity | 1 |
| Coverage | 1000Feet(Open Air) |
| Plug Profile | Door Mount |
| Specific uses | Amateur, Inside, Professional |
| Included components | Battery, Sensors, Siren |
| Batteries Included? | No |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| tech_spec_battery_description_toys | Alkaline |
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