EV-DW4917- DSC Wireless Recessed Door/Window Contact

Hidden discreetly within the frame of a door, the wireless recessed door transmitter (EV-DW4917) is powered by a replaceable lithium battery that provides uninterrupted supervised security for many years. Once installed, the only visible part of the transmitter is the access cap (available in white or brown). Access caps are either flanged or non-flanged and allow for either a screw-mount or a press-fit installation. A flat head screwdriver is used to change the cap if needed or access the battery. Primarily designed for installation within a door, the transmitter can also be used within the frames of windows. Dimensions: 3/4 Inch Diameter & 2 1/2 Inches Long.

Rating: (3.33)   # of Ratings: 6    Sort: New to Old RE-SORT REVIEWS: Helpful to Less Helpful Less Helpful to Helpful New to Old Old to New High to Low Rating Low to High Rating Showing comments 1-6 of 6 1. Jim on 1/24/2013, said: The manufacturer recommends an 11/16" hole, then "routing it out" until you get a snug fit for the body of the sensor. I used a dremel with a sandpaper cylinder to widen it a little. The body got stuck halfway in and I was unable to remove it without destroying it. It might be possible to use the sensor without the plastic body but in trying to wedge it in, a delicately-soldered capacitor on the circuit board came off. So that's $36 in the garbage. I bought another one since I already had a hole in my door. I widened it with a 23/32" drill bit from Amazon and it worked perfectly. A 3/4" bit would work too with some adhesive in the hole. The side with the magnet sticks out a hair due to a flanged top, maybe 1/16" to 1/8". If your door is very tight-fitting, start by drilling a shallow flat hole to set the flange in. I think a 13/16" spade bit would be perfect for that. Then continue with the 23/32". It was a pain. The two stars is for incorrect instructions that led to the product's destruction. The second one is working perfectly and were it not for the installation boondoggle this would be a four-star review. Was this comment helpful? yes no   (0 people found this comment helpful, 0 did not) 2. Ken on 9/13/2012, said: They work good for a while, however I've had to replace 3 out of 4 of them after a little more than a year of use. For some reason they become intermittent, and then c*** out completely. I need to replace another one now, I'm getting tired of it, they aren't cheep! Was this comment helpful? yes no   (2 people found this comment helpful, 0 did not) 3. Anonymous User on 12/18/2011, said: After installed, it works great. I tested it first before installation in case there was a problem with the sensor or installation. I tested the battery and it was fresh in the package. Similar comments to others. The instructions say to use drill a 11/16" hole and widen it a bit for fit. This only worked with the magnet. For the sensor I first bored a 11/16" hole with a spade bit then had to widen it a little with a 3/4" bit. The sensor fit was then good. It would appear the sensor was incorrectly manufactured a bit wide. Also the magnet sticks out about an 1/8". I had to recess the sensor for the door to close. I suggest not drilling the sensor hole too deep so you can get a good fit. I just installed it so I can't comment on reliability or battery life. Was this comment helpful? yes no   (0 people found this comment helpful, 1 did not) 4. Anonymous User on 6/4/2011, said: The instructions say bore a 11/16" hole. Don't do what I did and try to force it in; I broke mine. The casing should be made out of metal not plastic. I took the circuit board and battery out and dropped it into the hole. Works fine. Next time I will do what Steven said, use a 3/4" bit. Was this comment helpful? yes no   (3 people found this comment helpful, 0 did not) 5. Steven on 11/3/2010, said: These are nice in that they are hidden from view once installed. You need both an 11/16 and a 3/4 wood boring spade bit. The instructions say to use an 11/16 one, but you will never be able to fit the sensor in the hole because the sensor is too big. Just use the 3/4 bit to slightly open up the hole made by the 11/16 bit just a tad, and it should be much much easier to install. Don't overdo it with the 3/4 bit, otherwise, the hole will be too large! Was this comment helpful? yes no   (3 people found this comment helpful, 0 did not) 6. Sean on 8/23/2010, said: A pain to install, as the unit is slightly larger than the 11/16" hole they instruct you to drill. But the sensor is hidden (completely when the door is closed) and works flawlessly. Was this comment helpful? yes no   (6 people found this comment helpful, 0 did not) Showing comments 1-6 of 6