Model # CWPIR

Internet # 203619290

Add-On Sensor for Wireless Motion Alert System

$27.46 /each
  • Works with Chamberlain Motion sensor base
  • 1/2 mile range from sensor to base unit
  • Weatherproof outdoor sensor with adjustable sensitivity control



Model # CWPIR

Internet # 203619290

The Wireless Alert Sensor is a Passive Infra-Red (PIR) Motion Sensor that detects movement of people and vehicles, while allowing small animals to pass through undetected. Each sensor has its own unique ID, for a secure radio link. The base station (not provided) can learn the signals of up to 8 sensors. The base station gives a single beep for the first sensor that is programmed, a double beep for the second, and so on. Additionally, multiple base stations can work with the same sensor to sound in different places.

  • Transmits signal to base station up to a half-mile away
  • Detects motion up to 30 feet away with wide 120 degree coverage
  • Adjustable sensitivity controls help prevent false alerts
  • Wireless, weatherproof design makes it portable for use inside or out


Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Door Bell Or Intercom Type 
Electrical Product Type 
Intercom Accessory 
Product Weight (lb.) 
.5 lb 
Surveillance Features 
No Additional Features 
Surveillance Included 
Warranty / Certifications
Manufacturer Warranty 
1 year 


Price: $20 - $30
Brand: Chamberlain
Review Rating: 3 & Up
1 Question1 Answer

Customer Questions & Answers

Add-On Sensor for Wireless Motion Alert System
Add-On Sensor for Wireless Motion Alert System

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1 answer

Does this sensor work with Chamberlain Model # CWA2000

This question is from Add-On Sensor for Wireless Motion Alert System
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May 6, 2015
this sensor appears to have infrared and the cheaper one does not, is that correct?
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Answer (1)

May 7, 2015
Hello Happy, and thank you for your question. Yes, this sensor is compatible with the CWA2000 base station. One base station can have up to 4 sensors programmed, and the alarm tones that it produces will indicate which sensor has detected motion.
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Rated 3.4 out of 5 by 5 reviewers.
Rated 5.0 out of 5.0 by Armadillo Detection in Yard I live in rural southeast Georgia and have a bad situation with armadillos tearing up my grass in search of grubs. I bought the Chamberlain motion alert system and have had much success detecting these destructive critters in the wee hours of the morning. I mounted the sensor(s) on a flat metal stake about 1 foot off the ground in front of locations where they are digging (I call them "hotspots"). When the alarm goes off at night, I get up, grab flashlight and .22 rifle with red laser sight and take care of business. Its a very effective way of controlling our armadillo population. May 22, 2016
Rated 3.0 out of 5.0 by Continuous Alarms I have used these products for many years . This year I ordered a new base and one sensor. The base linked up with my original sensors and with the new sensor however the new sensor gives continuous alarms. I had to remove it from its location and place one of my old sensors in its place. March 26, 2016
Rated 4.0 out of 5.0 by motion system We really like our system. We have no problems with it. February 25, 2015
Rated 2.0 out of 5.0 by Driveway Monitoring I have purchase the Driveway monitoring system with sensor plus added 3 additional sensors. I've found that I can be 10 ft away from any unit and if I move very slowly, I can get past the sensor without tripping the unit. After the unit trips once, it will not trip again for at lease 60 seconds. If one were to move very quickly through the monitoring area, the sensor doesn't trigger. I've been able to cross the path of the sensor in about 25 feet with normal walking speed and not trigger the sensors. Would be nice to have a third switch to select reset time to be fast or slow for re-trigger speed along with another for super sensitive and or a better processor to better identify IR from non to even the beginning of some instead of waiting till the one reaches the other side of the sensor before a trigger. Maybe you went too far the other way to reduce the false positives. September 2, 2014
Rated 3.0 out of 5.0 by False Positives I purchased the base+sensor, plus 3 more sensors. I was hoping that I could set them up along my long driveway to know if someone was approaching or if someone were in front of the garage which is not visible from indoors. I set up 2 sensors in the evening and all seemed well. At noon the next day, the sensors were continuously alerting, so I moved them. It was better for a while but then the continuous alarm started up again until I shut off the base. It seems that they are picking up signals from my gravel drive or grass or something when the sun hits. I did not experiment to find the farthest distance, but I confirmed that they will transmit at least 1/4 mile without perfect conditions, so that is comforting. I found that if I drive my side-by-side UTV (like an ATV) past the sensor at 15 mph, the sensor does not report. I will see if the lower sensitivity setting helps my false positives, otherwise I don't know what to do. I wish there were a different sensor option that would detect vehicles with metal so I did not have to depend on motion for some sensors, and could put those alongside or under the driveway. October 3, 2014
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