DSC EV-DW4975 - Wireless Window/Door Contact Slimline Reviews

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Good 433 MHz Sensor
Submitted on 09/16/2020 Alarm Grid

The DSC EV-DW4975 is a wireless slimline 433 MHz door and window contact sensor for use with system such as the DSC Impassa, the DSC PowerSeries (added receiver required), and the 433 MHz Qolsys IQ Panel 2 Plus. If you're in need of a 433 MHz door and window sensor, then this is a great option to choose from. It has a slim profile, and it is relatively straightforward and easy to use. Although it isn't the fanciest sensor, it doesn't offer many downsides, and it still performs quite well to this do. For those reasons, we give the DSC EV-DW4975 a perfect 5-Star rating.

There are many positive aspects to like about the DSC EV-DW4975. For one, it has an extremely slim profile. In fact, the sensor measures less than a quarter-inch thick. The complete dimensions for the sensor are 2.25"L X 1"W X 15/64"D. The sensor is a bit on the lengthy side, but its width is average, and it is indeed super thin. The sensor also offers a fantastic battery life, as it can go roughly five (5) to eight (8) years without a replacement, assuming typical usage. If you need to replace the battery for the sensor, then you will want to get a lithium CR2032 coin battery. You can find these at most pharmacies, or you can purchase one from Alarm Grid.

There are not many downsides regarding the DSC EV-DW4975. Its magnet spacing gap is just 5/8 of an inch. This is about average for a sensor of this caliber, but you should be able to find sensors with a larger magnet spacing gap if you look hard enough. The 433 MHz frequency isn't commonly used with security systems anymore. Most users starting from scratch will not elect to build around this frequency. Instead, you will typically only use this frequency if you are upgrading an old Impassa or PowerSeries System, or if you have a 433 MHz IQ Panel 2 Plus for some reason. It's also worth mentioning that this sensor does not utilize any wireless encryption for enhanced wireless security. But these downsides aside, we still give the DSC EV-DW4975 a 5-Star rating.

Good: Slim Sensor, Great Battery Life

Bad: Average Magnet Spacing Gap, 433 MHz Isn't Commonly Used Anymore, No Encryption

Bottom Line: 5 Stars