Bosch BDL2-WP12G TriTech Motion Detector Pet Immune

I purchased this device on November 7, 2024, and finally gathered the courage to install it. First, I’d like to mention that my old sensor, a Honeywell Model DT-720B, lasted an impressive 18 years. Recently, after reactivating the *Away* feature (when no one is home), we encountered an issue while on a trip. The alarm company unexpectedly called to inform me that the sensor had been triggered.I immediately turned on my cameras, but everything appeared fine. The alarm company explained that the alarm would keep ringing unless another motion was detected. Sure enough, it went off again, leaving us no choice but to instruct the company to tell the police to stand down. When we returned from vacation, a technician inspected the system but found no issues. However, he recommended replacing the sensor for around $100, including the new Bosch BDL2-WP12G TriTech Motion Detector Pet Immune device. He suggested that the Honeywell sensor was likely giving false alarms due to its age.At first, we decided against replacing it. But one day, while sitting in the backyard with my wife, I decided to test the system by arming the alarm in *Away* mode. Within five minutes, the alarm went off again, confirming the problem. That’s when I decided to purchase the Bosch sensor. Although it took me 30 days, I finally installed it.### Installation Notes:For those considering an upgrade, this Bosch device is slightly smaller than the Honeywell DT-720B. I had to unscrew the old sensor and drill new holes for the Bosch device. It comes with a bubble level to help ensure proper alignment, but due to how my old sensor was mounted, leveling it perfectly wasn’t feasible. Instead, I aligned it as closely as possible to the old device’s position.**Wiring:**The wiring process was tricky, as I couldn’t find a clear comparison guide for older devices despite extensive online searches and watching YouTube videos.The Bosch sensor comes with six connections:1. Negative (–)2. Positive (+)3. NC4. NC5. T6. TIn contrast, my old Honeywell DT-720B had only four connections:- **C**: Connected to the green wire- **NC**: Connected to the yellow wire- **V–**: Connected to the black wire- **V+**: Connected to the red wireInitially, I connected the Bosch’s Negative and Positive terminals without issue. However, I mistakenly wired one NC and one T connection for the other wires. While the sensor seemed to power on, it didn’t trigger the alarm when I walked around the house.After more research, I found another video explaining that both the green and yellow wires should be connected to the two NC terminals, as the T connections are primarily used for business applications. Once I rewired it correctly, the sensor worked perfectly. I tested it by walking around the house while the alarm was armed, and it immediately triggered the system, prompting a call from the alarm company.### Performance:In the attached pictures, you can see my old and new wiring setups. That same day, we left the house with the *Away* mode armed. It worked flawlessly—even with the fan, TV, and my Roborock Q Revo Plus vacuum running in the same room as the sensor, it didn’t trigger false alarms.So far, I’m very pleased with this device. I hope it last a litte longer.

I have some pretty old (26yrs) Bosch motion with a very old Honeywell Ademco Vista 20P/20PSIA Vista 15P/15PSIA. I wanted to add this one on and work like the others. It is a perfect fit and easy hook up 4 wires l ike the old ones. This one like my old ones are NC (Normally Closed). I then hooked up this panel to the Ring Retrofit Alarm Kit. Everything works perfectly. No false alarms. Nice blue light to indicate motion.

I installed one on each of my back porches (one covered and one screened). The screened porch one gets some sun in the afternoon but no issues so far. Very sensitive even outside (which may be outside the operating parameters I'm not sure). I'll be curious to see how long they last outdoors.

This is an aesthetically pleasing and quality constructed sensor. Install was a snap. Installed in my basement where our 65lb dog often resides. I give it 4 stars because we did have a false alarm incident, where the monitoring company called to say this sensor had tripped. It would have had to have been the 65lb dog, and the immunity is supposed to be up to 100lb.

I wired my house with these in my third Alarm System Self install 2 Omni Pro's and 1 Omni IIe, I have to agree with one of the negative reviewers that this one is a bit harder to install everything has to fit tight especially the mounting screws. There is no wiggle room. One other negative is it doesn't have wide angle coverage. I have one in a long hallway and I shouldnt have put it on the long wall. It would work better looking down the hall. There are two power wires and two NC There is also a NC tamper that can be hardwired separately. I set my resistors in between as an EOL supervised zone. This is a compact and smart looking detector with dials on the inside to adjust sensitivities towards pets etc. It is also temperature compensated and nabs me when I approach doorways. I like the look of it and am convinced that there is a lot of thoughtful electronics inside that will spare me nuisance false alarms

I didn't fully realize how nice these were until I started to install them. The level bubble does not work that great, it sticks and then jumps. The downward motion detection along with the normal motion detector makes it very hard to get around this unit. I had to use one of these instead of a combo glass break/motion detector when one of the wires didn't show connectivity. The location was right next to a bank of windows at about 9' at 90 degrees. A normal motion detector would have a blind spot below and angled away from the unit due to the beam projection. The downward beam on this unit covers that blind spot.I don't recall exactly now (installed several different brands), but I think installation was a little bit of a pain as I had to drill out screw holes before putting it up. However, this is a very well engineered and designed product. May be using them more often in the future.Have not powered up and tested units yet.

TriTech Motion Detector a little more then some but have had no false alarms, sometimes short people or kids may make it farther then I think they should but I don't think and no one has made it past when testing them.

I use this sensor outside (I know, not recommended), but it works great. I originally had a Bosch PIR sensor on my driveway, but it would give false alarms on hot, cloudy days since the clouds would make the driveway intermittently warm/cool.Switching over to the microwave + PIR totally ended those false alarms. The only minor problem I have is that the microwave range is very long for big trucks driving by, but nothing else gives me false alarms. So I've gone from hundreds of false alarms to two per week when the garbage truck comes. Not a big deal, and something I can solve by changing the aim a bit.