Feature: can be used for both horizontal and vertical application Accuarcy: ±20"(±1mm/10m) Self leveling range: ±5° Operation range: 500m with detector (Diameter) Five head speeds: 0/60/120/300/600 R.P.M Four scan widths: 10°/45°/90°/180° Remote control: available working distance 20m Operation temperature: -10 ~ +45 Power supply: DC 4.8-6V (4*sub-C NI-MH battery) Continuous working time: Approx. 20hr. Waterproof and dustproof: IP 54 Weight:2.5 Kg Standard pack: laser unit, aluminium box, remote controller, laser decetor with clamp, target plate, glass, charger,manual -