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A motion sensor door chime serves two important function for property owners, whether of a home or a business. First, it alerts the owners about the entry of people and/or pets into the interior areas of the structure. Second, it welcomes the people into the interior areas with a pleasant chiming sound.
 
Of course, the pleasant sound can easily be substituted with a loud alarm sound, in case the unit becomes more of a security system and less of a sales tool. This is usually the case when property owners want an extra layer of security during the night and non-business hours. Otherwise, the pleasant chiming sound should be in place lest welcome people are turned off by the jarring alarm.
 
Such versatility in use is available with the Kerui Wireless Split Welcome Motion Sensor Alert Alarm System Doorbell. Here’s what you need to know about it.
 
Notable Features
 
The Kerui motion sensor alert alarm is one of the more popular products of its kind in the market for good reasons. When installed properly, it can serve as both an electronic welcoming party and an alarm system, a versatility that not many products can do.
 
This is a motion-activated alert system that can detect the presence of people and animals within its operating range. Basically, when the motion sensors detect movements made by a person or animal, it sends a signal to the receiver. In turn, the receiver triggers the playing of the chosen melody.
 
While the motion sensor door chime can detect the movement of large objects, it will not sound the chime when smaller objects are in its operating range. This reduces the incidence of false alarms, such as when a bird flies past the door.  You don’t have to unnecessarily leave whatever it is you’re doing just to check the door – and then discover that it was just a false alarm.
 
The light control distance ranges from 2 to 8 meters. This should be sufficient distance for most residential and commercial applications – unless, of course, you want a larger operating area for tighter security measures. At this distance, you still have time to react to the alert, such as getting up from the chair to check who’s at the door.
 
In case of an intruder, you will likely still have enough time to call the police and alert your others. You may want to install a close-circuit television camera to immediately determine who’s at the door. Your decisions about what to do will be faster and smarter, too, thanks to the combination of sound cues and visual image. 
 
You can choose from 32 songs for the melody in the motion sensor door chime. You can even choose a human voice just to add a personalized touch although this isn’t as popular.  You may even change the melody every day just to add an element of surprise for your employees and customers. 
 
The unit’s volume can also be adjusted. You can choose from four volume levels from soft to loud. You can, for example, choose a soft sound when you’re in the vicinity of the store entrance. You may then increase the volume when you will be working at the back of the store. 
 
The manufacturer recommends using high-quality rechargeable batteries or alkaline batteries, whichever is more convenient in your case. You can use a USB data cable in recharging the batteries, too.
 
The unit should also be installed in a well-protected area, such as on an exterior door shielded by a roof or in an interior door. The installation area shouldn’t be exposed to direct sunlight, rain and snow for various reasons. These reasons include the housing not being weatherproof and the motion sensors being affected by changes in outdoor temperature.
 
You can also use the unit as an integrated alarm system. The functions can include welcome alert, burglar alarm, and doorbell as well as a night light. This versatility adds to its value for the money quality. 
 
The unit can also be expanded to include 30 pieces of accessories. These include remote controls and detectors so more doors can be covered and more people can control the system. 
 
The package includes a receiver and a passive infrared motion sensor, both without their batteries, and an instruction manual. The batteries should be purchased separately.
 
The unit cannot be connected to the Internet. This can be a blessing and a curse, so to speak, depending on your need for 24/7 connectivity including monitoring. It’s a blessing when you want 24/7 connectivity but a curse when you’re wary about hacking risks. 
 
In summary, the Kerui Wireless Split Welcome Motion Sensor Alert Alarm System Doorbell has the following features:
 
  • Chime alarm system with 32 songs and 4 volume levels to choose from
  • Passive infrared system used in the detection of movement
  • Expandable with the addition of accessories like more sensors and remote controls
  • Batteries required for operation
  • Indoor and outdoor use although the unit should be placed away from direct exposure to the natural elements
 
Pros of the Product
 
The Kerui motion-activated sensor door chime has the following benefits with proper installation:
 
  • Works in low-traffic and medium-traffic areas
  • Generally accurate alert system with a few false alarms
  • Wide range of sounds to choose from with adjustable volume
  • Sufficient operation range for most medium residential and commercial applications
  • Easy to install and use
 
Cons of the Product
 
This has a few disadvantages, too, including:
 
  • Tune must be re-programmed when the power in the receiver is cycled on
  • Rings on its own occasionally (i.e., false alarms)
  • Not weatherproof
 
Who Is It Best For?
 
The Kerui Wireless Split Welcome Motion Sensor Alert Alarm System Doorbell is a great product for home and business owners who want the following benefits:
 
  • An alert system that provides pleasant chimes to welcome visitors into the shop
  • An alarm system that can be used to alert parents about the movements of their children, such as into restricted areas or out of the door while violating the curfew
 
With creativity, it can be used for a wide range of applications in the home and business!
 
Verdict - Should I Buy It?
 
Yes, this is a very satisfactory motion sensor door chime that will give a better value for your money in comparison with inferior units. You can even expand its area of operation by installing more sensors, receivers and remotes over a larger area.
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