The Leica Rod Eye 140 Classic has 2 large graphic displays on the front and back of the receiver With 3 bright LEDs it can be used as a ready reference for the receiver position Menu function allows for additional options to be set allowing your own personal functional preferences Fitted with a level vial ensuring good alignment and improved reading accuracy Offers exceptional reception the extra long reception window includes the unique technology that provides the accurate digital input With three audio settings offlowhigh up to 105 decibels for noisy jobs The versatile rod bracket ensures solid mounting to the grade rod supplied The circular level vial aids to keep the grade rod plumb With a protective overmould that protects the receiver from drops in tough jobsite conditions Special Features Anti-Strobe Protection Detects and ignores the flash from strong strobes on the job so that they will not interfere with the receiver function Beam Finding Passing the receiver through the laser beam will cause the receiver to beep twice quickly Out of Beam Display If the detector is moved out of the detector range the arrow display will indicate the direction to move to return to the laser beam Laser Low Battery A small laser icon on the receiver display alerts the user when the batteries are getting low Specification Working Diameter Laser Dependent 1350m Detection Window 120mm Detectable Spectrum 600-800nm Detectable Accuracies Fine ± 10mm Medium ± 20mm Coarse ± 30mm Audio Volumes HighLowOff Automatic Shut Off 10 Minutes Arrow Display 11 Channels Protection Class IP67 Input Power 2 x AA Batteries NOT supplied Battery Life +50 Hours Dimensions 173 x 76 x 29mm Operating Temperature -20°C to +50°C