The Basics About Alarm Security ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I decided to write an article on Burglar Alarms, describing exactly how they are wired up and how to bypass the system so that you don't get caught. They use a variety of items to catch thieves, they include PIR's, Door Switches, Sirens, Police Autodiallers, Bells etc. PIR's - Passive Infra Red - Designed to comb an area of the property from intruders.. they send out beams that comb the area. anybody walking across the beams when the alarm is set will trigger the alarm off. There is a weakness with these that if you walk directly at them 99% of the time they won't trigger off the alarms. Door Switches - These are put on doors for security purposes incase they try and break in through the door. These switches are Normally Close (NC) Switches, so if you break in you also trigger the alarms because the switch flips telling the control panel that some cunt is breaking in.. Some Door Switches are on a timer For Entry/Exit (more about this later). Sirens - Designed to be as noisy as possible usually 114 Db the other aim of the siren is to draw attention to the fact that something is wrong, at night you can here a siren from a long distance. Police Autodialler - This little bastard calls the police about 4 to 10 secs before the alarm goes off, it sends a pre-recorded message to the local police station, there are various ways to disable it which will be discussed later on ... Bells - the aim is the same as for a siren usually about 118 Db How to bypass Alarm Systems ~~~~~~~~~~~~~~~~~~~~~~~~~~~ You will need at least 2 - 3 people when doing a job where there is an alarm system... The best way to enter somewhere is through the main door. WHY !!!!! Because the main door will be on an Entry/Exit timer to allow people to come in through the door put bags etc down get right key etc.. so they always set up a timer usually about 10 - 20 secs.... This gives you time to :- 1 - Disable the autodialler by either Cutting the Autodialler wire or unscrewing it pulling the telephone wires out and disconnecting the mains and battery. Whilst someone is turning the autodialler off and the other person is Disabling the Control Panel, the other person should disable the bell, To do this is easy push the bell up and it should dislodge from the base unit,, get abit of tape and at the bottom of the base plate is a Micro switch tape this shut so that when you take the bell box lid off you trigger off any alarms.. then simply disconnect the bell from its holding 2 - Pulling the siren off the wall. 3 - Unscrewing the control panel + disconnecting Mains Power + Not forgeting to take the Battery out. ADDED INFO ABOUT CONTROL PANELS + BELL BOXES. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Control Panels are protected from tampering by 2 things 1 - The panel screw. 2 - A Micro Switch located at the edge of the control lid , so if the alarm was set and you just opened it it would set all the alarms off.. so leave it to the end. Bell Boxes are protected in exactly the same way as the above.. Wiring Details for Alarm Systems ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Switches usually have 4 wires for the alarm + 2 for Anti-tamper They are wired up in series that is in 1 big loop.. for one switch ust use the 4 wires as normal but if you wish to connect more switches you just cut 1 of the alarm wires so that their are 2 ends and connect it to the switch doing the same for the Anti-Tamper thus producing 1 continuous loop.. The front door switch though has its own wire because it goes to the entry exit circuit on the panel all the other switches are either on zone2 or zone1.. PIR's usually have 6 wires:- 2 for alarm 2 for Anti Tamper and 2 for the power supply The wiring up of more than 1 pir is the same as for switches that is the alarm is in series as is the Anti-Tamper, BUT the power is wired up in Parallel that is there is no break in the wire just splice back the covering and attach another wire to it.. I hope you find this article helpful, please feel free to pass this file around to any board or friend (except the police ahah) who may want it but please leave the contents intact.. Hacker T --==< Hackers UK >==-- NOTORIOUS PROJECT II BBS