SANJIE Wireless Door Open Alarm Sensor Chime (UK plug-in receiver, 2 sensors) with LED indicators and adjustable volume
Product description
Quick overview
If you want a simple way to get alerted when a door or window opens, this SANJIE wireless door open alarm chime is built for that job. The idea is straightforward: you stick one or more magnetic sensors to the door/window, the paired plug-in receiver chimes when the gap changes, and you can control things like volume and the tune you want.
On paper it looks designed for two everyday realities at once: home monitoring (for example, helping you notice when someone leaves a bedroom) and small business use as a door chime reminder when visitors come in. The fact it includes a receiver and 2 sensors makes it easy to set up quickly, rather than starting from scratch.
That said, it’s not the sort of product you buy if you need a fully featured security system with app control or professional-grade detection. It’s more of an alert/chime add-on than a replacement for alarms.
Key points
The strongest selling angle here is the “chime when opened” behaviour, backed up by adjustable sound settings and visual LED indicators on the receiver. You can choose from 55 chimes and set one of 5 volume levels, which helps if you’re placing it in a quieter room or somewhere busier.
It also comes with practical installation choices. The receiver is a UK plug-in, and the sensors are meant to be mounted using double-sided adhesive tape, with the sensor/magnet gap needing to be less than 0.6 inch. There’s also an ON/OFF switch mentioned, so you can shut the system off when you don’t need it.
For day-to-day use, this can feel like an inexpensive “extra layer of awareness”. For example, you might place one sensor on a child’s bedroom door and another on a nearby internal door. When the door opens, you get a clear chime instead of discovering later that it was left ajar.
What you’ll notice day to day
Once set up, the experience is about sound and visibility. The receiver’s LED indicators are there for quick confirmation without needing to listen all the time, and there’s a memory function so it keeps the previously set tune after you re-plug it.
The operating range is stated as 600 ft, with a coverage distance reaching 800 ft/240 m in the description. That discrepancy is worth bearing in mind: real-world range depends on walls and layout, so if you’re covering a larger property, you’ll want to check placement options rather than assume the maximum distance will always be reliable.
Also, the 110dB figure is provided for the chimes, but the overall “fit” still depends on volume setting and how close you are to the receiver. If you’re sensitive to noise, you’ll likely want to use the lower volume levels.
Tech details
- Name: SANJIE Wireless Door Open Alarm Sensor Chime, 1 UK plug-in receiver and 2 sensors
- Type: Wireless door/window open alarm chime
- Format: Plug-in receiver + magnetic door sensors
- Dimensions: Not stated
- Capacity: Not stated
- Operating range: 600 ft (also described as coverage distance reaching 800 ft/240M)
- Number of chimes: 55
- Volume levels: 5 (up to 110dB stated)
- Power/control: Receiver is UK plug-in, sensors include an ON/OFF switch
- LED indicators: Included
- Memory function: Keeps previous set tune after re-plugging
- Installation method: Double-side adhesive tape on the door/window
- Sensor placement requirement: Magnet gap less than 0.6 inch
- Durability claim: Each door sensor can be used up to 100,000 times
- Included items: 1 UK plug-in receiver and 2 sensors
Where it shines
This is a good fit if you want a quick reminder when a door or window opens and you’d rather hear an alert than rely on checking manually. It suits scenarios like:
- Family use where you want to notice when a door has opened unexpectedly.
- Home office/store use where a simple chime can help you stay aware of customers walking in.
If you’re thinking about it as a business “doorbell-style” reminder, the description also frames it that way—so it’s worth considering where sound can be heard by staff without becoming annoying.
When it might not suit you
It might not be a great match if you’re expecting a sophisticated security system. There’s no mention of features like smart app connectivity, integration with other devices, or monitoring capabilities beyond the chime/LED alert.
You may want to skip it if your installation plan doesn’t work with adhesive mounting, because it relies on sticking the sensor in place and keeping the sensor/magnet gap under 0.6 inch. Also, if you’re trying to cover long distances through thick walls, the stated range/capability should be treated cautiously—test positioning makes a big difference.
Compatibility & requirements
This product is set up around a UK plug-in receiver and magnetic door/window sensing. You’ll need doors or windows that can take the sensor with adhesive, and you’ll need to be comfortable following the placement guidance (particularly the magnet gap requirement) for the alarm to trigger as expected.
Is it worth it?
Worth considering if you want a straightforward wireless door open alarm chime with LED confirmation, 55 tune options and 5 volume levels, and you prefer a receiver you can just plug in without complex wiring. It also looks particularly practical if you want to cover more than one opening straight away, since the pack includes 2 sensors.
It’s less compelling if you’re shopping for a full security solution rather than a notification chime. And if your environment is challenging—like heavy walls, awkward mounting surfaces, or you can’t maintain the required sensor/magnet gap—you may find it doesn’t behave as reliably as the headline claims suggest.
Before buying, it’s a good idea to check your likely sensor placement, where the receiver will sit (so you can actually hear it), and whether adhesive mounting is acceptable for your door or window.
Mini FAQ
Does it work on doors and windows?
The product is described as a door and window open alarm, using a sensor and magnet arrangement. The magnet gap requirement suggests it’s meant for reliable contact alignment on those openings.
How loud is the chime?
The description states 55 chimes with 5 adjustable volume levels, and mentions up to 110dB. In practice, your chosen volume level and distance from the receiver will affect what you experience.
Is the tune remembered?
Yes—there’s a memory function, and it keeps the previous set tune after re-plugging.
Can I turn it off?
The door alarm sensor is described as having an ON/OFF switch, so you can control when it’s active.
What’s in the box?
The listing states 1 UK plug-in receiver and 2 sensors are included.