Door Magnetic Contact Sensors

The magnetic alarm contacts is mainly composed of a switch part and a magnet part. Among them, the switch part is mainly a normally open reed; The magnet part is mainly a permanent magnet with a permanent magnet inside, which is used to provide a stable magnetic field. When the switch part is very close to the magnet part, that is, when the door or window is closed, the contact switch is in the working state, and the alarm sound will be sent out after receiving the attack of the forcible intruder; When the switch part is far away from the magnet part, that is, the door or window is open, there is no forced invasion, and the door magnetic switch is closed. Door magnetic switches are mostly installed at home doors and windows. If necessary, we don't need to find someone. We can successfully install them by ourselves. First, buy the door magnetic switch and wipe the installation position of the door magnetic switch; Secondly, use screws to fix the switch part and the magnet part on the door and the door frame respectively, and pay attention to the corresponding position; Finally, install the cover plates of the two parts. At this point, the door magnetic switch is successfully installed.

The door magnetic system is a safety alarm system, which is divided into door magnetic and window magnetic (the principle is the same, and the shape is different). Door magnet / window magnet is not easy to see if you don't pay attention. The so-called door magnet / window magnet is actually the abbreviation of door magnet switch and window magnet switch, which is composed of two parts: the smaller part is permanent magnet, and there is a permanent magnet inside, which is used to generate a constant magnetic field; the larger part is the main body of the door magnet, which has a normally open dry reed tube inside. When the permanent magnet and the dry reed tube are close (less than 5mm), the door magnet sensor is in the working waiting state. When the permanent magnet leaves the dry reed tube for a certain distance, Normally open. Magnets and Clarinets are installed in door frames (window frames) and door leaves (window leaves) respectively. They are basically embedded (also surface mounted), so people in the industry generally don't pay attention to these. You can open the household door and the outer window. Look at the top of the household door frame and the window frame of the outer window, and you can see the round, usually white components. In fact, this is the so-called door magnet and window magnet.

Working principle of magnetic door alarm contacts

The door magnetic system is a safety alarm system, which is divided into door magnetic and window magnetic (the principle is the same, and the shape is different). Door magnet / window magnet is not easy to see if you don't pay attention. The so-called door magnet / window magnet is actually the abbreviation of door magnet switch and window magnet switch, which is composed of two parts: the smaller part is permanent magnet, and there is a permanent magnet inside, which is used to generate a constant magnetic field; the larger part is the main body of the door magnet, which has a normally open dry reed tube inside. When the permanent magnet and the dry reed tube are close (less than 5mm), the door magnet sensor is in the working waiting state. When the permanent magnet leaves the dry reed tube for a certain distance, Normally open.

Magnets and Clarinets are installed in door frames (window frames) and door leaves (window leaves) respectively. They are basically embedded (also surface mounted), so people in the industry generally don't pay attention to these. You can open the household door and the outer window. Look at the top of the household door frame and the window frame of the outer window, and you can see the round, usually white components. In fact, this is the so-called door magnet and window magnet.

Function of door magnetic switch

The function of door magnet is to detect whether doors, windows, drawers, etc. are illegally opened or moved. It consists of wireless transmitter and magnetic block. The window magnet is mainly composed of a switch and a magnet, and the switch part is connected by a magnetic spring switch through a lead wire. Shaped and packaged; The magnet part is encapsulated in a plastic or alloy shell by a magnet with the corresponding magnetic field strength. When the two are separated or close to a certain distance, it will cause the opening and closing of the switch so as to sense the change of the position of the object. "

The door magnetic switch is mainly composed of a switch and a contact magnet. The switch part is connected by a magnetic spring switch through a lead wire Shaped and packaged; The magnet part is encapsulated in a plastic or alloy shell by a magnet with corresponding magnetic field strength When the two are separated or close to a certain distance, it will cause the switch to turn off, thus sensing the change of the position of the object