Function introduction
1. The instrument can detect hidden in the wall, ceiling and floor of the metal (steel bar, copper pipe), cable; Metal, cable, wood, etc under drywall.
2. This instrument can be used for laser ranging, can measure the length of the house, area, volume; Add and subtract measurement, hook measurement, etc
3. The instrument can emit cross laser line, with the display Angle display can achieve laser marking function
4. This instrument can be used to detect wood and building materials moisture content 
5. The instrument can be used as a measuring pen to detect whether the wire is live
6. The instrument can also be extended by USB interface, such as thermal imager.