Chamberlain Wireless Motion Alert System, Model# CWA2000

The sensor will detect anything that passes in front of it. There is an option to adjust the sensitivity to help avoid "false alarms" from wildlife and pets.

You can adjust the sensor sensitivity and height off of the ground.
Mine is adjusted so that I am picking up only people and vehicles.

I live in the country also. Yes the unit will pick up everything. However if installed as recomened and adjusted for your needs it works well with very few false alarms.

This model will detect people, animals and vehicles, so it is wise to mount it higher than a large dog, thats it.

Yes... even chickens... Had to move my unit away from chick coop.

I would say it depends on how low you install the sensor, the higher off the ground the less likely to sense the animals

This detects any moving objects. System features an adjustable infrared motion sensor.

No. Each additional sensor is one more beep and flash.

No, each has it's own unique signal so you know which one was activated, the first has one long tone, the second has two tones , the third has three tones and so on. The base unit reciever volume is adjustable and full volume is pretty loud

There is no difference in sound between sensors

You can change the number of beeps for each sensor, but they will sound the same

I have two sensors, Sensor one beeps twice, sensor two beeps three times, I would imagine it continues in this order but not positive as I have only two.

When additional sensors are added, they will sound with more beeps. Example, the first sensor will beep once, the second sensor will beep twice, and so on.

No.

No. It will sound an alert, but there's no retention or record kept.

Hello Joeschomes, and thank you for your question. This unit does not retain a log of which sensors were activated.

The base unit is designed to alert you at the time the event occurs. It will not store info on which sensors went off when there is no one home at the time the event occurs.

I set mine perpendicular to the driveway

The instructions suggest the sensor be pointed so it senses the rear of the vehicle, so I have mine at an angle.

The Chamberlain Alert System will work best at a perpendicular mounting.

Hello, and thank you for your question. An angled alignment may provide earlier detection for you, but keep in mind that street traffic passing by, if in the "view" of the sensor, may cause false alarms.

The specs say up to 2 years, but this would be reduced depending how often it is triggered. The manual suggests the batteries be replaced annually and that is good advice. In any case, the unit will alarm when the batteries get low. The best time to replace them is in the late fall will temps start to drop so you will have fresh batteries to compensate for the effects of the cold.

The instructions say up to two years, we'll see since I've only had mine for a month.

product material says two years. But temp and humidity can greatly influence the life of a battery.

The transmitter uses 4 AA batteries and they can last up to 2 years before replacing. Chamberlain recommends using lithium batteries in colder environments to improve battery life expectancy.

The receiver will work with the included AC adapter (120 V) or 4 AA batteries.

Yes, there is a 120vac wall wart provided in addition to the batteries that can be installed. The batteries should last about 1 week, use 4 AA alkaline.....

Although the unit comes with an adapter compatible with 120V homes, it is also designed to work with 4 AA batteries.

The reciever is 120 volt.

yes. I have two outside one just out the door And one at the gate 150' away.

Yes it can and works great.

Yes, the sensor is designed for outdoor use. Simply follow the included instructions carfully for proper installation.

This Chamberlain wireless motion alert system has a sensor that is weatherproof, so there is no need to shelter it. The receiver can be located in the house up to 1/2 mile away if there is little to no interference.

Yes. Walls too

yes

The unit will transmit through obstructions such as trees, bushes, walls, etc. however significant obstruction may impede performance.

Obstructions would limit the systems ability to function properly. It works best with line of sight operation.

The range is rated at clear-line-of-site. If your receiver in the house is at a higher elevation than the transmitter, it is possible that some waves could be bounced, or reflected so it might work even if you have hills in between...only way to find out is experiment

Hello hd162, and thank you for your question. The range ("up to 1/2 mile") quoted in the description is under optimal conditions, with clear line of sight between the sensor unit and the base station. Hills, trees, and similar obstructions will decrease the range, of course, but the amount is impossible to predict without bringing the product to the location and performing a test. However, since the driveway begins at a point lower than the home site, please be aware that the lower elevation of the transmitter (sensor) will have a noticeable negative effect on the overall range of the system.

The 1/2 mile range is a clear line of sight. Hills, trees and power lines will shorten the distance. There is not a set distance that it reduces the range with obstructions. You would adjust the transmitter position closer to the receiver so it would work for your terrain.

Yes, the first sensor gives two beeps at the base unit when activated, the second sensor gives 3 beeps, the third sensor gives 4 beeps, etc.

Yes, the base station will let you know which sensor has detected motion. The first sensor added causes a single alarm tone, while the second sensor will cause two tones, the third three tones and so on.

Hello and thank you for your question. Yes, the base station will let you know which sensor has detected motion. The first sensor added causes a single alarm tone, while the second sensor will cause two tones, the third three tones and so on.