After cutting power off and turn back on, the siren of outdoor bell box and the keypad goes off, I can't stop them in anyway (unless cut off all power source). I have already replace new backup battery. There is no response when I input the alarm code. I've also tried to reset to default but seems unsuccessful. There is only "power" signal light on on the keypad, all others (zone 1 to 8, tamper, attack, day) are off. Even if I disconnect all zones and just leave the keypad connected, the siren of keypad still goes off. What happens to my alarm and what can I do?