Hi,
I've just started getting a false alarm on my Texecom Shock/Contact sensor which is on my Entry Door.
It's only happened twice in two weeks, obviously once is too many times. The system has been perfect since install 6 months ago.
Oddly, both false alarms have been at 7.15am and 5.30am, so it got me wondering whether the panel is suffering from mains interference.
Now I've checked for induced AC and it is too high at 1.7vac - 1.9vac, so that is my first port of call.
I've also checked the loop resistance and it's 10.06k (EOL) so that's fine.
Before I get a filter installed, which I need anyway by the looks, I wanted to check voltages on here because they seem a little high.
I can't find any rating for the mains transformer, it doesn't say on it the expected output, but I am reading 18.8v at the panel input terminal (everything connected as normal). I expected to see a bit less. Furthermore, the spec sheet states the keypads operate between 10v-13.7 and I get a reading of 13.7vdc-13.8vdc. Seems like it's on the high side of the threshold...
Now I haven't allowed for lack of accuracy with my meter, however, according to fluke it's 1% or less.
Does anyone know what voltages I should be seeing at the transformer output?
Thanks
Danny