How to make a home alarm system
To ensure the security of the property , you need to set the house alarm. You can use ready models . It is noteworthy their use uneconomical . You can set the alarm with his hands in his house . For that you need to have a passive infrared motion detector , siren, 12V power , insulation tube , battery holder , wires and relays 6B.
Work must begin with the motion sensor. It needs to be translated from 220V to 12V. The system may be at a supply voltage of 8V to 30V . If you made a 12V supply , then you need to install the relay on 6B. Next you need to open the sensor . From it, you must remove the spherical part. To do this, simply peel back one of the pillars . Remove the card . The sensor is an optical system with a passive infrared receiver, which responds to changes in magnitude strikes it infrared radiation. The sensors have a viewing angle of 180 degrees. You must supply power to the points on the left , that is a negative and positive pole . To the right of the point you need to connect the relay coil .
Do not forget to remove the staffing relay. Please note places in the sensor housing is not enough. You have to get the relay through the wires at the base of the case. On the sensor there is a regulator. With it, you can set the duration of the siren. The unit should be put into the room and bring out the siren . The sensor will be triggered as soon as a suitable food for him . It is recommended to bring a siren switch to a secret place . You can include it in a few minutes after the sensor is turned on .
The system is fully ready. It is uncomplicated device . The sensor is powered via a switch . Once it is triggered, the voltage goes to the relay coil , which in turn comprises a siren its open contacts . Do not forget to check the availability of the system . Please note , you will need to well protect your ears , as it is quite loud . Otherwise, you may damage your hearing. Now in your house has a good security system . You can rest easy , leaving it for a long time . Burglars do not usually pay attention to the houses in which the alarm system is installed . For greater certainty it is recommended to install bars on the windows . They are well prevent the penetration of the robbers in the house .
How to make a Mini Alarm System