Alarm for antitheft door

Abstract

The invention discloses an alarm for an antitheft door, comprising a circuit box for loading circuit components and a support for supporting the circuit box; the support is positioned under the circuit box and is perpendicularly connected to the bottom of the circuit box; the circuit box is internally provided with a contact switch arranged on the antitheft door, a relay connected to the contact switch and a storage battery; the normally-opened contact of the relay is serially connected to a buzzer and a camera which is opposite to the observation window of the antitheft door. The invention provides convenience to trace the bugler.

Description

technical field [0001] The invention relates to the security field, and specifically discloses an alarm device for anti-theft doors. Background technique [0002] Security door is the abbreviation of security door. It has both anti-theft and safety performance. According to the "General Technical Conditions for Anti-theft Safety Doors", a qualified anti-theft door cannot be pried open by ordinary hand tools such as chisels, screwdrivers, crowbars, and portable electric tools such as electric hand drills within 15 minutes or a 615 square millimeter hole can be opened on the door leaf. opening, or a 38 mm2 opening within a semicircle of 150 mm2 at the locking point. And the lock used on the security door must be the special lock for the security door with anti-drilling function after passing the test by the Testing Center of the Ministry of Public Security. Anti-theft doors can be made of different materials, but only those doors that have passed the standard inspection and...

AI Technical Summary

Problems solved by technology

But present alarm often adopts sound to attract surrounding residents, so that it scares away thieves.

But when no one is around, this alarm that scares away thieves doesn't work anymore

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