This 4-pack WiFi door sensor set offers a practical solution for basic home security and smart home automation. Each unit is a compact wireless contact sensor designed for doors and windows, monitoring open or closed status and sending instant app alerts to a smartphone via the Tuya smart platform. The sensors operate without a separate hub, connecting directly to a home Wi-Fi network. Construction utilizes durable ABS plastic for the housing, with a small magnet and a main sensor unit that maintain reliable contact detection. The hardware features low-power consumption for extended battery life, with each sensor powered by CR1632 coin cell batteries. Setup is straightforward through the Tuya app, which provides real-time notifications, customizable schedules, and activity logs. Compatibility with Alexa and Google Assistant allows voice control and integration into broader smart home routines. At an affordable price point for four units, this set delivers dependable monitoring for entry points, suitable for apartments, houses, or offices seeking cost-effective automation. The sensors work in typical indoor environments with stable Wi-Fi, and the wireless design simplifies installation without drilling or wiring.

This product emphasizes reliable function and value, focusing on essential door/window monitoring without unnecessary complexity.