该产品采用半导体激光器做光源(可选红光，或绿光)，具有结构紧凑、体积小、重量轻、功耗低、光 束好、性安装简便的特点。产品配备本安型直流电敬交験压电源，可广泛用于w井下巷道、公 路和铁路隧道掘进时的指向定位。

This product adopts the semiconductor laser as the light source (optional red, or green), and has the advantages of compact structure, small volume, light weight, low power consumption, stable performance, good light, easy to install features. Products with intrinsically safe DC or AC regulated power supply, can be widely used in coal mine underground roadway, railway and highway tunnel excavation point positioning