Laser beam detector is an active security device based on laser beam obstruction detection, consisting of a transmitting end and a receiving end. It continuously emits and receives laser beams of specific wavelengths. When the beam is obstructed by an object (human body, vehicle, foreign object, etc.), it immediately triggers an alarm signal. Different from the "field detection" of electromagnetic sensing cables, its core advantage lies in precise linear protection, suitable for long-distance and high security boundary prevention.

Key points of selection

According to the selection of protection distance: indoor type is selected within 50m, outdoor medium distance type is selected within 50-500m, and long-distance perimeter type is selected above 500m. ​

Prioritize multiple beams in complex environments: choose four beam models in densely populated areas (such as residential areas) to reduce false alarms caused by flying birds, fallen leaves, etc. ​

Special Scenario Attention Additional Features: Explosion proof certified models must be selected for explosion-proof areas, and -40 ℃ industrial grade products must be selected for low-temperature areas (such as Northeast China). ​

Compatibility matching: When a linked monitoring system is required, choose a model with RS485 bus or network interface (TCP/IP), which supports remote configuration and status query.

Installation and usage precautions

Installation alignment: The transmitter and receiver need to be accurately aligned, with a deviation angle of ≤ 0.1 °. It is recommended to use a laser calibrator for long distances (>500m). ​

Environmental avoidance: Avoid installing near strong electromagnetic sources (such as high-voltage power poles), and outdoor installations should avoid easily obstructed objects such as trees and billboards. ​

Regular maintenance: Clean the lens dust every quarter, check the wiring terminals for looseness every year, and clean the surface snow of the equipment in low temperature areas during winter.