DSC PG9939 - PowerG 915MHz Wireless 4-Button Key Reviews

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Useful Key Fob!
Submitted on 09/21/2020 Alarm Grid

The DSC PG9939 is a 4-button key fob that interfaces with security systems that support PowerG technology. These systems include the Qolsys IQ Panel 2 Plus and any DSC PowerSeries NEO System with an added PowerG Transceiver. A user must press and hold one of the four (4) buttons for at least one (1) full second to send a command to the system. The system will then respond depending on how the key fob was programmed. Overall, the DSC PG9939 is a simple, yet effective device. It is great for anyone needing a key fob for a PowerG-compatible system. We give it a 5-Star rating.

There are many positive aspects regarding the DSC PG9939. For one, the sensor is small and compact. You will easily be able to fit it inside your pocket or purse for carrying around. There is even an attached key ring so you can secure it to your car keys. The four (4) buttons are easily identifiable, and they will help you use the sensor more easily. The key fob also has an LED light to provide visual indication of a command being sent. It can even produce a beeping sound for added verification of the device being triggered. We also like the fact that the PG9939 prevents false alarms by requiring that command inputs must be held down for a full second, and three (3) full seconds for a panic. Like all PowerG sensors, the device uses 128-bit AES encryption. It is supposedly the same range as any other PowerG Sensor (up to 2km in open air when used with the NEO), but you will likely find the range considerably smaller in practice. Still, you should find the PG9939 to offer a great wireless range for a key fob device.

There are not many downsides regarding the DSC PG9939. The design is somewhat dated, as it seems to resemble a much older key fob. We've seen many sleeker looking key fob models hit the market in recent years, so we're a bit surprised DSC didn't do more to make this sensor appear more modern. The fact that this key fob does not support dual-button inputs is also a bit of a letdown, as key fobs from other manufacturers regularly support this feature. As a wireless key fob, you will need to replace the batteries for the device every so often. But these downsides are relatively minor, and they do not stop us from giving the DSC PG9939 a 5-Star rating.

Good: Compact Design, Key Ring, Easily Identifiable Buttons, LED Light, Beeping Sound, False Alarm Prevention, Encryption, Great Wireless Range

Bad: Dated Design, No Dual-Button Inputs, Requires Battery Replacements

Bottom Line: 5 Stars