The infrared alarm is divided into two types: active and passive.The active infrared alarm is to actively emit infrared the alarm. When the infrared rays meet the obstacles, they will rebound back and receive the probe of the alarm.If the probe is monitored, the infrared rays are restless, that is, the red line is constantly emitting the red line, and the alarm will not call the police.
Infrared alarm brand
Infrared alarm brand recommendation: Neville Security (China) Co., Ltd., the top ten brands of security, belongs to the Honeywell International Company Automation Control Group, is one of the worlds largest and most experienced electronic security series products manufacturers.The pioneer provided by the "one -stop" security product supply and integration security solution.Sony, began in 1946. One of the leaders in the worlds civilian/professional audiovisual products, game products, communication products and information technology, one of the representative companies in Japans electronics industry, the worlds leading personal broadband entertainment company, has the worlds fingerBrand influence.
Infrared alarm installation
Before installing the infrared alarm, the alarm host should first be powered on a fixed position, and the alarm probe is hung at about 2 meters high to make it lean forward and down to obtain high sensitivity.After connecting the power, after about 1 minute delay, the alarm enter the alert state. At this time, if anyone enters the monitoring area, call the police immediately.The alarm is about 1 minute and stops automatically.Then again in a state of warning.When the owner enters, first press the shutdown key on the remote control. As the infrared alarm sounds "嘀", the alarm is turned off, and it will no longer call the police into the warning area.When the owner left the alarm area, pressed the boot key, and a "嘀" rang, the alarm was in a state of warrior.In the event of an emergency, press the emergency alarm key, and the infrared alarm is an emergency alarm.The infrared alarm is equipped with high, medium, low three -gear sensitivity adjustment, and users can adjust themselves as needed.
Infrared alarm price
The price of infrared alarm is generally around 100--300.
Principles of infrared alarm
Use infrared rays to transmit diodes via LED infrared light, and then focus on optical mirroring to make the light spread to a long distance, which is accepted by the photographer.Alerts are issued when the light is blocked.

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