DSC PG9920

PowerG 915MHz Wireless Repeater

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(based upon one review)

The DSC PG9920 PowerG Wireless Repeater will repeat the signal for wireless PowerG Sensors. This effectively doubles the already impressive range of the sensor. With this repeater, a PowerG Sensor can achieve a maximum distance of 4km with a clear line of sight. Buy the PG9920 here.
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The DSC PG9920 is the wireless repeater for PowerG Sensors and PowerG automation devices. The device works by taking the signal sent by a PowerG sensor and sending it out a second time. This effectively doubles the range of the device. This will give the device a signal range of up to 4,000 meters with a clear line of sight.

It's hard to imagine a scenario when the range of a PowerG Sensor isn't enough. Even without a repeater, a PowerG Sensor has a signal range of up to 2,000 meters when used in open air. This is already the furthest range we have seen out of a wireless security sensor. But if a user finds that this isn't enough, the PowerG Repeater will certainly get the job done. Remember, signal range can be significantly reduced due to the presence of certain building materials. The PowerG Sensor can be great for ensuring that a device can communicate properly through thick walling or other construction.

The PowerG Sensors all communicate at a frequency of 915 MHz. The PG9920 repeats signals at this frequency so that they can more effectively reach the alarm system. The device usually receives AC power from a wall outlet, but it also comes with a rechargeable backup battery that will keep the device powered for up to 48 hours. It also utilizes 128-bit AES encryption to protect itself and the devices connected to it. Overall, this is a great device for ensuring proper communication between a PowerG Panel and sensors.

NOTE: The maximum range for a PowerG Sensor used with an IQ Panel 2 Plus System is only 2,000 feet in open air. This is considerably less than the advertised 2km range. The 2km range refers to when a PowerG Sensor is used with a DSC PowerSeries NEO System. This repeater will only increase the maximum distance for a PowerG Sensor used with an IQ Panel 2 Plus System to 4,000 feet in open air.

Brand: DSC

Good PowerG Repeater
Submitted on 12/31/2020 Alarm Grid

The DSC PG9920 Wireless Repeater takes the encrypted signals sent out from PowerG devices and repeats them a second time to effectively double their range. PowerG Sensors already boast a remarkable range on their own, as they can communicate from up to 2km away from certain panels in an open air environment. Placing the DSC PG9920 directly in the middle between the sensor and the panel in an open air environment can theoretically allow for up to 4km in communication range. Usually, this distance is somewhat smaller in actual practice, due to placement and obstacles that disrupt range, but it is still very far for wireless sensors. We think that the DSC PG9920 works great for its intended purpose, and we give it a perfect 5-Star rating.

There are many positive aspects associated with the PG9920. For one, it effectively doubles the range of PowerG Sensors. The module can be enrolled with your panel so that it monitors for things like AC loss, low battery, loss of RF supervision, and cover tamper. We also like the fact that the PG9920 sends out 128-bit AES encrypted signals, so any communication between the system and the sensors remains secured. The LED light on the unit is helpful for setup and troubleshooting, so that's a nice touch. And we appreciate that the device can be auto-enrolled with any system that supports PowerG Sensors.

There are not many downsides associated with the PG9920. One issue is that it is for PowerG Sensors only, which somewhat limits its use. The module is a bit on the large side, so you will need to find a good spot to put it. The backup battery for the device comes included, but it will eventually need to be replaced, so keep that in mind. But overall, we still score this product 5 Stars.

Good: Doubles PowerG Range, Enroll w/ Panel to Monitor for Trouble Conditions, Encrypted, LED Light, Auto-Enroll

Bad: PowerG Sensors Only, A Bit Large, Battery Has Limited Life

Bottom Line: 5 Stars

I'd agree that having the repeater close to the transmitter isn't a great idea. However, unless the repeater is working like no other radio repeater I've heard of, it receives a signal, then boosts it up to "full strength" when it re-transmits. So, if your repeater is receiving a weak signal at 2000 ft range, then boosts it up to "full strength", there should be another 2km of available range. Of course, if the repeater is set so that it won't boost any more than the original signal strength (how would it know this, anyway?) then yes, you would only get an additional 2000 ft range. I don't want to argue that you are wrong, It's just that to me it doesn't make sense that a repeater that can boost a weak signal up to travel another 2km would somehow self-limit to 2000 ft for the Qolsys panel.
The recommendation for repeaters is to install them at a halfway point between the system and the problem sensors. Having a receiver installed right near the panel does not add extra signal range to the existing range, the mention of 4,000 meters is referring to this boosting the signal at the end of it's current range.
I'm not sure your range estimate is right for use with the IQ Panel 2+... The repeater communicates separately with a sensor, and should have 2km range to and from the sensor. The range between the repeater and the IQ Panel 2+ would be limited by the capability of the panel, so that would be down to the 2000 ft. Therefore, the repeater would extend the range to 2km open sight plus the 2000ft open sight (in theory). Am I missing something here? It would seem that simply by installing your repeater very near the panel, you end up with about 2km range.
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