#4 in Industrial warning alarms
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Reddit mentions of Alarm.Com ADC-200M-EVD-L Alarm Control Module
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Reddit mentions: 1
We found 1 Reddit mentions of Alarm.Com ADC-200M-EVD-L Alarm Control Module. Here are the top ones.
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Specs:
Height | 18 Inches |
Length | 23 Inches |
Weight | 2 Pounds |
Width | 16 Inches |
It's an alarm controller.
Likely provided cellular connectivity to a home alarm system so you couldn't disable the unit by cutting the phone lines.