DSC SECURITY WS4945 WIRELESS ALARM DOOR/WINDOW CONTACT/TRANSMITTER

Installation was pretty easy. I followed the tips from some of the other reviews (noting the number at the back BEFORE you stick on the tape). Also best to program these BEFORE you put them on the window. These are very slim and easy to install. I did it myself and worked great. The one thing I did have to do after a few days was to set the polling interval to be pretty high to 24 hours (from the default). Otherwise, I was getting false alerts (no response) with the units intermittently.

So I wanted to add some window sensors to my house, but to have an installer come out and do it they would charge $175 / window for this! I was able to add this my self in a matter of minutes, just a precaution. Make sure you login to your security provider and put your alarm in test mode. Because as soon as you put your alarm into installer mode (*8) it will trip a silent alarm. And next thing you know you will have a few cop cars at your house. I learned this the hard way. Note you need the installer code for the alarm system to add these.

Excellent. My original pro install of same sensor was defective, so I ordered this replacement, which is perfect and crazy easy to install as a replacement wireless sensor. I'll explain. When my first (but defective) DSC wireless sensor was installed in April 2016, the Tech did not spot the defect although he experienced for 30+ minutes the trouble installing and enrolling (programming to my system, which he also had installed). I did not realize the defect either at first and for many months. Then 6-12 months after install my sensor randomly would stop reacting to open and close (silent with chime on) and/or show as OPEN on the Keypad, which is what pro installer experienced at install. I recall he had great difficulty getting the wired door contact connected to the wireless transmitter. The false alarming began about 18 months after install--within the last 4 weeks. I checked the battery and it was 3.09v, barely over required but over the required. Replaced the battery or tried, and discovered the circuit board was not cut correctly. Not enough clearance for the battery and battery contact clips. Very hard to force the (yes, the correct, recommended) C2 Panasonic batt in the batt space. Pressed HARD against both top and bottom of circuit board and apparently from original install had bent the batt clip out of shape interfering with the wired reed switch connect screw-in terminal. Gently tried to reposition the batt clips. Still no joy--wires not seated and battery clip interfered with wired contact connections. Battery had already damaged batt clips because circuit board would not allow correct fit for correct battery. Ultimately batt clip broke. Soldered back, but still had to slide in (force) battery clip edge to make connection. Clearly not going to work longterm. So, I ordered this replacement, hoping to confirm my thought that original install unit was defective (it was). Spent part of 2 days researching how to install new wireless switch just to replace defective one (replacement only, not as new). Finally found several website instructions on how simple just a replacement of DSC wireless sensor for another (same) DSC wireless sensor can be (if you have the installer code--I did, luckily). Easy peasy. After about 2 days of research, ordering this switch, removing the defective one and installing the new one, and programming the new one (enrolling it to my system) took less than about 2 minutes. Working great and I expect no problems now. The new one had appropriate "footprint" spacing on board for the battery, the battery terminal contacts were appropriately (differently) placed than my originally installed defective one, and seems tight and proper.I've only just installed it a few hours ago, though, and will commit to update this review if this one begins failing in a way that seems likely related to its as-sold condition. Not expecting that, though, at all, given the visible distinctions between my original defective sensor and this one that seems very properly manufactured.I recommend searching for instructions and/or videos of how to install and enroll (program) this sensor to your particular DSC system (both the installed system motherboard and the wireless receiver--you must have both, of course--and the keypad, too). If you do your research well (takes a while for non-pro's), you will have a very simple & fast install. Good luck!

Good range, nearly 50 feet.

Works fine. I have mine mounted in my mailbox for use as a mail delivery sensor. I made a cutout in the metal mailbox and covered the hole with a plastic electrical box cover, so the RF signal had a path out of the box. This TX is mounted inside the mailbox on the back of the plastic cover. My mailbox is over 250 feet away from the receiver. A recent install, but so far it is working even in this Minnesota winter.I have this is set-up as zone type 26, and I use a NC switch on the mailbox door.

This is your basic workhorse DSC wireless sensor. It has all the modern features, including tamper detection, the ability to monitor a second locally-wired loop, etc. Installation is reasonably straightforward, everything required is in the box. So far battery life has been good. I'm not 100% sure of the compatibility with new generation "all in one" style DSC alarms, but I suspect they are all compatible. May also work with some other vendors, but I would confirm that first.

The sensor worked for about a week and then started erroring. It was then past the 30-day return period and I was told to go to the manufacturer-DSC. DSC said they hadn't sold the unit in months and refused to provide any support. I recently learned from my alarm company that the product shipped was a "NA" product and not the one that I ordered. So, bottom line, I'm out a sensor and out my money due to the shipment of a wrong part. NEVER BUY FROM PRIZM SECURITY!

This replaced the thinner model as it can separate a little more before tripping the alarm. Was having false alarms on my steel building due to expansion and contraction. Works great with no more false alarms.