4 Vertical 4 Horizontal and 8 points 4V4H8P1DDust-proof and drip-proof IP-54Laser safety level Class 2MPrecision ±1mm/10mAutomatic levelling range ±3.5°The scope of work 80 m Radius (with receiver)power supply Lithium battery rechargeable battery / chargerOperating temperature -10°C~+45°C