laser rangefinder 1.high accurate ,40m range 2.easy operation easy-to-read number 3.CE,FDA,Rohs complies. laser rangefinderPD- ... room)Type ±3mm*Smallest unit displayed1mmLaser classClass2Laser type635nm, < 1mWDiameter of laser spot (at distance)10mm/ 10m ( 35mm / 40m ) ... measurementsDimension and weight116*58*30 mm, 140gTemperature rangeStorageOperating-25°C to 70°C0°C to 40°C laser rangefinder 40m