SanJie Wireless Door Open Chime 4 Sensors

Overview

This kit bundles 4 door sensors with 1 receiver so several entry points can be monitored at once, each sensor sending its own signal for one of 55 assignable ringtones. Battery life is rated at roughly 100,000 uses per sensor.

With 4 sensors bundled in, this kit is aimed at homes or small businesses that need to watch more than one entry point at once, from a toddler's bedroom door to a back gate. Each sensor can be set to a different one of the 55 ringtones so you can tell which door opened by ear. The listing states up to 600 ft of open-area range between sensor and receiver, though the title advertises 800 ft, so treat the higher title figure as an optimistic upper number rather than a guarantee.

• 4 sensors + 1 receiver in the kit
• 55 ringtones, 5 volume levels up to 110dB, with mute
• Rated range up to 600 ft in open areas
• Expandable to 50 sensors per receiver

Who it's for

Households or small stores that need several doors monitored at once rather than just one, especially where telling doors apart by sound matters. Less suited to anyone who only needs a single entry covered, where a simpler one-sensor kit would do.

Pros and cons

Performance notes

Each of the 4 door sensors detects when its door opens and sends a wireless signal to the shared receiver, rated for up to 600 ft in open areas; the receiver plays one of 55 assignable ringtones at one of 5 volume levels up to 110dB, or can be muted. The receiver-sensor pairing supports up to 50 sensors total if more doors need covering later, and the sensor battery is rated for about 100,000 triggers.

Specifications