weve had a melcom for years 4 but weve had on and of faults so supplier said fit anew bell box did that ,most of the faults happened during the night anyway not work fitted another bell box still same so got new keypad andpanel but no keypad tamper fault again repaced battrey same even with allsensors and bellbox disconnected help please its a melcom st 6550
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home alarm systems.