SanJie Wireless Door Chime Alarm for Home & Business — White Magnetic Sensor, 26 Tones & 110dB Volume

SanJie wireless door chime instantly notifies you when a door or window opens, helping protect children, monitor seniors, and welcome customers.

Compact and easy to set up, this SanJie entry alarm pairs a small magnetic sensor with a plug-in receiver to deliver audible and visual alerts across homes and small commercial spaces. The kit works without complex wiring, offers multiple tones and volume levels, supports long-range transmission, and can grow with extra sensors so you always know which entry point triggered the alert.

How does the SanJie chime help keep kids safe?

Placed on bedroom doors or exterior exits, the sensor sounds the chime the moment a door opens so caregivers can respond quickly. It provides a non-intrusive reminder that a child has left a room and reduces the chance of unsupervised wandering.

• Immediate audible alert when a door or window is opened.
• Adjustable volume up to 110 dB to suit noisy environments or quiet homes.
• Compact magnetic sensor adheres to door frames without tools.
• LED indicator gives a visual cue for hard-of-hearing caregivers.

Can this be used in a shop or office to know when customers enter?

Yes — the receiver functions like a retail doorbell, notifying staff when someone steps inside. Multiple chimes and a long wireless range make it suitable for storefronts, small offices, or service counters where staff need an unobtrusive entry alert.

• Up to 500 ft wireless range in open space for front-door coverage.
• Choose from 26 tone options so different doors can have distinct sounds.
• Multiple sensors can pair to one receiver for whole-store monitoring.
• Memory function preserves your chosen tone after power interruptions.

What installation and settings are required to start using it?

Installation is tool-free and designed for quick setup: the receiver simply plugs into a standard outlet and the sensor adheres with included adhesive. The unit arrives pre-paired, and you can change tones, adjust volume, and add extra sensors without technical skill.

• Plug the receiver into any standard AC outlet — no wiring needed.
• Peel adhesive backing and stick the magnetic sensor to door and frame.
• Select one of 26 melodies and one of 5 volume levels via receiver controls.
• Pair additional sensors to the receiver to expand coverage as needed.

How reliable is the signal and can I tell which door triggered it?

The system uses a strong wireless link able to cover typical home and small-business distances; you can assign different ringtones to different sensors to identify the triggered entry quickly. The receiver also includes a visual LED to supplement the audible alert.

• Effective signal range up to about 500 feet in open areas.
• Unlimited sensors can be paired to a single receiver for scalability.
• Distinct ringtone assignment helps pinpoint which sensor triggered.
• LED indicator offers visual confirmation alongside sound.

Who is this for?

The SanJie wireless door chime is ideal for parents and caregivers who want a simple, non-invasive way to monitor doors and windows; small business owners seeking an unobtrusive entry alert for staff; and anyone needing a flexible, expandable sensor system without electrical installation. It’s a practical solution for child safety, elder supervision, retail entry notification, and general perimeter awareness in homes, shops, and offices.