Low Battery notification

[Tomas Nanko]

Hello, one of my clients is reporting low battery being displayed on the keypad, but I don’t see it on the app. But when I go into history I get;

WLTX 2002C4A4 Low batt WLTX

2002C4A4 Low batt Zone 3

 

Zone 3 is a hardwired sensor.

[Michael Burrell]

Tomas,

Can you provide me with the last four digits of the MAC on the system, if it is cloud connected, I can check the event logs.

Can you also let me know the control firmware as well.

Thanks,

Mike

[Tomas Nanko]

375D

[Michael Burrell]

Tomas,

Thanks for the information. It appears the last trouble condition was a AC Power and Low Battery from 2/1/25. I am not seeing any indication of a sensor low battery in the event log. 2002C4A4 is not a TXID common format. I will dig in tomorrow and provide an update.

Thanks,

Mike

[Tomas Nanko]

Speaking of AC Power and Control Low Battery, I want to send you a video of what I’ve experienced with the keypad 5min after AC power loss. The keypad started to go haywire. How and where can I send this to you?

[Michael Burrell]

Email me at techsupport@elkproducts.com and I will provide you with a number to message it to.

Thanks,

Mike

 

[Michael Burrell]

Tomas,

I reviewed the information you provided with Engineering this morning. We believe we have identified the issue and corrected it in the firmware. We will test to confirm the resolution and publish a firmware update for the panel. Below is an overview of the issue.

The information you referenced in the history pertains to a key fob low battery condition. The system should display the sensor name and details in the history, but due to a bug, this information is getting scrambled and is not relevant. There were recent updates to how sensor information is displayed, but key fobs were overlooked in that process.

To confirm this, can you check the history to see if a user armed or disarmed the system around the time this entry was logged? I assume that is the case. If you see a user entry, please check that user’s fob for a possible low battery.

Regarding the odd behavior from the keypad that you sent me—I greatly appreciate that, as this is not something we have seen before. Can you provide details about the system? We would like to attempt to recreate the issue in our testing. Specifically, I need information on the number of bus devices, power devices, battery type and size, etc.—any details that would help us closely replicate your setup.

If you’re more comfortable providing this information via email, please send it directly to me. I believe you have my contact information.

I’ll update you on the progress of the key fob issue as soon as I have more information.

Thanks,
Mike

[Michael Burrell]

Tomas,

I wanted to provide an update regarding the keypad flashing and beeping you experienced. We were able to replicate the issue in our test lab by lowering the voltage at the keypad to 10.5 volts. The system has a low-power shutdown feature that powers down at 10 volts to prevent deep discharging the battery.

The keypad requires just over 10.5 volts to operate. What you experienced was the keypad functioning at the edge of this voltage threshold. As a result, the keypad powered on, drawing the voltage down, which caused it to power off. With the keypad off, the voltage climbed slightly, allowing it to power back up. This cycle repeated rapidly, creating the flashing and beeping behavior you observed.

While this explains the symptoms, it does not identify the root cause. Several factors could contribute, including the amp load on the panel, the battery’s quality and amp-hour rating, the wire size, and the length of the run to the keypad. If you have access to the keypad, one test you could perform is measuring the voltage at the keypad and comparing it to the AUX voltage at the control panel. This will help determine the voltage drop and could provide insight into why the keypad experienced this issue before the control panel reached its power-down state.

I’d love to learn more about this installation to better understand the situation and explore ways to improve our product.

Thanks again,

Mike

 

 

[Tomas Nanko]

Hi Michael,

The keypad is about 40 feet away from the panel and connected to the keypad terminal, the AERF board is also connected there. All of my wiring is 22/4 stranded. the 5x motion detectors are Honeywell DT8035. Next time that im there i will measure out the keypad voltage. I will also replace the battery with a 8ah model

[Roberto Tokici]

How can you turn off the battery monitoring if you are using a UPS?

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