LAR 200 horizontal rotation laser 550 m working range with the EC 300 Digital receiver Diode horizontal laser accuracy A 01 mmm Simple operation one switch Extremely robust if the LAR 200 & tripod are knocked over no problem Just set up the tripod again switch on & start measuring The STABILA Protector System patent applied for cushions severe impacts Water & dustproof to IP 65 Machine control applications Cold & heat resistant Operating temperature 10 C 60 14 F 140 F Selflevelling working range A 5REC 300 Digital Receiver The reference deviation can be read in mm directly in the display probably the fastest height correction when concreting or aligning struts without moving the levelling rod Wide receiving range 8 cm top to bottom Two displays front & back Water & dustproof to IP 67 70 hour operating life with 2 x LR 6 AA alkali batteries Automatic switching off after 30 minutes plus signal Operating temperature 20 C 60 C