MY99 Battery went flat alarm sounding now wont start
 

My MY99 UK turbo sigma alarm system, battery went flat a few times through lack of use tried to get it started to take for mot and it wont start wont turn over immobilised keyfob wont even activate central locking tried both fobs, any ideas anyone

You need a booster on it to allow you to shut the alarm up.

I entered 4 digit code into keypad in glovebox and it kicked everything back in

Sounds like a flat battery

battery was fully charged, keyfob now working today my neighbour told me that his keyfob wasn't working as well, sound s like somebody playing with a 433.910 mhz radio from china to block fobs and have a laugh

+1.SJ.

Even if the battery is now fully charged its prob still fuked and wont hold charge for long