The Sanjie WiFi Door Chime is a wireless door sensor system designed to alert users via smartphone notifications when someone enters a monitored area. Equipped with two sensors and one receiver, this kit covers up to 500 feet of open-range transmission, making it suitable for businesses, homes, stores, and offices. The receiver offers 20 selectable ringtones, allowing users to customize auditory alerts for different entry points or times of day.

The system operates on a standard Wi‑Fi connection, ensuring real‑time push notifications to a paired phone even when the user is away from the premises. This feature supports child safety monitoring by notifying parents when a door is opened. The hardware construction uses durable ABS plastic for both sensors and receiver, providing resistance to everyday wear and minor impacts.

The sensors are battery‑powered with long standby times, reducing the need for frequent battery changes. Installation is straightforward: adhesive backing or screws attach the sensors to door frames, and the receiver plugs into a standard wall outlet. The system’s stability is enhanced by a reliable wireless protocol that minimizes interference from common household devices.

The 500‑foot range covers large houses, small retail spaces, or office corridors without signal loss. Each ringtone is distinct, with adjustable volume levels to suit different environments, from quiet offices to busy storefronts. The unit also includes a low‑battery indicator and a pairing button for quick sensor‑receiver synchronization.

While the chime does not include a camera, its primary function is to provide immediate audio and mobile alerts. The overall build quality ensures consistent performance over time, and the affordability makes it an accessible option for basic entry‑detection needs. This product is ideal for anyone seeking a straightforward, budget‑friendly way to monitor door activity without complex installation or subscription fees.