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Mend Honeywell Optima XL4 Alarm Code Wrong

Intruder alarm Optima xl 4?

OPTIMA XL4
Trying to put in the code, nothing happens, have I pressed a wrong button. I have changed the battery, on opening the front of panel, the alarm sounded, cancelled entering the code

Ken Hindmarsh
October 2016
HoneywellHoneywell Optima XL4Security Systems, Home Alarm SystemsAlarm Code Wrong
Check your tamper switch on the main control panel. With the old ADE panels the keypad keys do not respond if a tamper is open.

Brian
November 2016

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Honeywell Optima XL4 Alarm Issues - Help