









🔐 Stay connected, stay secure—your smart home’s silent guardian.
The SONOFF DW2 WiFi Wireless Door Window Alarm Sensor offers hassle-free, no-hub-required security with 2.4GHz WiFi connectivity. It delivers instant phone alerts for door/window status changes, supports Alexa and Google Home voice commands, and features low battery reminders to ensure uninterrupted protection. Easy, tool-free installation and smart scene integration with SONOFF devices make it a must-have for modern, connected homes.







| Battery description | Alkaline |
| Number of batteries | 2 AAA batteries required. |
| Voltage | 3 Volts (DC) |
| Control method | App |
| Mounting type | Door Mount, Window Mount |
| Sensor technology | Contact Sensor |
| Size | Small |
| Manufacturer | SONOFF |
| Part Number | DW2 RF |
| Product Dimensions | 3.1 x 1.9 x 7 cm; 30 g |
| Batteries | 2 AAA batteries required. |
| Item model number | DW2 WIFI |
| Style | Wireless |
| Material | PC V0 |
| Installation method | Self-Adhesive |
| Item Package Quantity | 1 |
| Certification | CE, FCC |
| Special Features | Turn on/off your light with an action; Notify you when the door/window is opened; Check the opening and closing status of door/window on APP; Keep linkage with SONOFF smart devices to create various smart scene |
| Batteries included? | No |
| Batteries Required? | Yes |
| Item Weight | 30 g |
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