Mengshen Motion Sensor Alarm, Wireless Doorbell Kit, Home Security System with 1 Sensor, 2 Receivers - MS-YBQ041, Long-range Transmission, Multi-mode Operation

Fantastic kit! great price and works better than expected, my only regret is not buying 2 or 3 kits because of how versatile they are. Example one set watching side entry with audible alert for security, another set for in the porch watching for deliveries, guests and post. Pro tip that I discovered, if you have a mirror, you can expand the sensor range and angle.

The Mengshen motion sensor alarm is powered by 3 AA batteries for each of the 2 receivers and 3 AAA batteries for the transmitter that are not included in the kit. The photos on Amazon show the transmitter in various locations including a sheltered outdoor location but the instruction sheet clearly states that the device is for indoor use only. I’ve set the device up in doorbell mode and the signal range is excellent and there have been no false alarms so far. There are a wide range of tones and around 35 melodies but the simple ding-dong and very bright flashing LED light is the best option in my opinion. There are a small number of videos on YouTube that demonstrate the device setup and melodies so it may be worth checking them out before purchase saving you some time and inconvenience of returning the product if unsuitable. Purchased from Lanke Direct vía Amazon with free shipping. Recommended.

Works well value for money

My pond fish were being eaten by a predator and this brilliant motion sensor has given me peace of mind and saved my pond fish. Its so easy to set up and the alarm is loud and does the job. Love it

Quality good,but price to high

We didn’t want a cat flap, so we put the sensor outside when we let the cat out. Bell rings when it senses the cat at the back door. Accidentally left the sensor out all night in a rainstorm and still works ok. Loads of ringtones to choose from.

Very effective, easy to install and cheap. Supplier allowed itself a ridiculously long delivery window, but satisfaction with the product overrides. Fitted as warning security on residential property.

Bought for the shop door. Took a bit of sorting to get the angle right so that it didn't detect people inside the shop or those walking past outside. I also have to be careful not to put any stock that blows in the wind near the sensor. But once set up it works perfectly and allows me to go to the loo or the stockroom without worry.

Easy to install and easy to use.

First time in a long time I took a chance on ordering something not knowing if it would do what I need it to. This product has been fantastic. Works perfectly and good battery life. This is used in a harsh industrial environment. Overall the sensor is about 50 ft away but due to the building construction, the opportunity for interference is high. Usually "wireless" devices have a 10% chance of working but this works flawlessly. It is used as an entry alert. Now we know someone is coming long before we see them!

Economico ed efficace.

I like this alarm a lot. Can be used with batteries or USB plug-in (cable and charger not included). Easy to program. I added the remote control, and you can pair more than one remote by purchasing separately here at Amazon. Alarm is quite loud, and it sounds off right away once the unit detects movement.

Sehr zuverlässig und leichte Handhabung