該產品采用半導體激光器做光源(可選紅光，或綠光)，具有結構緊湊、體積小、重量輕、功耗低、光 束好、性安裝簡便的特點。產品配備本安型直流電敬交験壓電源，可廣泛用于w井下巷道、公 路和鐵路隧道掘進時的指向定位。

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