The HL760 Receiver includes an LCD backlight so the digital readout and other information is visible in low light and dark conditions. The readout is displayed on the large front and rear LCDs and shows exactly how far the elevation is from on-grade for fast and easy cut/fill readings. Accurate measurements can be made without moving the rod clamp, saving time and increasing productivity. Selectable units of measure can be displayed to meet specific applications - mm, cm, ft, in or fractional inches. A 12.7 cm reception height, more than double the industry standard, allows quick acquisition of the laser beam. An anti-strobe sensor prevents false readings from site strobe lights. Radio communication allows working with another HL760 or HL760U for long-range remote display and monitoring capability. A new function - "fingerprinting” - links the receiver with a particular laser. Once the receiver is paired with the laser transmitter, the receiver has the ability to filter out other lasers that strike the receiver and only accept the laser it is paired with. The HL760U also provides grade matching and PlaneLok capabilities with Spectra 400 Series lasers. The receiver is designed to survive the tough construction site conditions, is waterproof, and can withstand a drop of 3 meters onto concrete. The HL760 comes a 3-year limited warranty. Specifications: Working Radius: 1 m - 460 m (3 ft - 1500 ft); (Laser dependent): Laser Detection Height: 127.0 mm (5”) Numeric Readout Height: 102.0 mm (4”); Internal Radio: Full 2-way communication, operation and security lock with paired device; Radio Working Radius: Up to 220 m (720 ft), depending on orientation, conditions, and paired device; Accuracy (Dead band): Ultra Fine: 0.5 mm 0 02 in 1/32 in; Super Fine: 1.0 mm 0.05 in 1/16 in; Fine: 2.0 mm 0.10 in 1/8 in; Medium: 5.0 mm 0.20 in 1/4 in; Coarse 10.0 mm 0.50 in 1/2 in; Reception Angle: 45 degree minimum; Detectable Spectrum: 610 nm 780 nm (HL760), 520 nm 780 nm (HL760U).