Question about Ademco 5828 Wireless Keypad Lynx / Vista Non Talking
It sounds like your 5V transformer isn't working. It could be the outlet it is plugged into isn't working, or the outlet is on a light switch that is turned off, or there is a problem with the keypad itself. The user manual says:
"AC-Powered Operation: When powered by the
optional AC adapter, the keypad remains active at all
times. If AC power is lost, the keypad reverts to
battery-powered operation until AC power is restored
On AC powered units you can get the status by viewing
The only way I know of to keep it active is by using the transformer.
Hope this helps.
Posted on Mar 22, 2011
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Posted on Jan 02, 2017
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My newly installed 5828V also thinks it is in battery mode all the time. The ADT tech found no 5 VDC at the plug coming from the basement. The installer had added wire to make the trip, so there were four splices. One of them had come loose. The ADT repair tech repaired the splice, but the keypad then failed entirely.
I wondered if the original installer had gotten the polarity backwards, but because there was the broken connection, the keypad was saved from destruction. (Operating on battery causing my symptom) When the ADT repairman fixed the splice, the wrong polarity condition may have blown the keypad.
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