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AnonymousInactive
April 15, 2008 at 4:08 am
Post count: 1001
As an FYI, that 2K resister out by the sensor is probably used for tamper protection. If someone cuts the line to the sensor or bridges the line to the sensor, it presents a resistance change that can be picked up by the alarm system and reported as a tamper. When my hardwired security system was originally configured, I had to define whether there was an “end of line” (EOL) resister installed in each of the circuits.