Change the way you work around the construction site with the Spectra Precision HL450 Digital Laser Receiver. This digital laser receiver is an easy-to-use tool that accurately measures elevations across a construction site, and is ideal for use with any rotating transmitter. The HL450 Laser Receiver features a digital readout of elevation that provides a numeric display of ± 40 mm or ±1.5 inches. The readout is displayed on the large front and rear LCD screens and shows exactly how far the elevation is from on-grade. Accurate measurements can be made without moving the rod clamp, saving time, and increasing productivity. The HL450 has a 4-inch reception height, double the typical industry standard, which allows quick acquisition of the laser beam. Also included is a patented anti-strobe sensor that prevents construction lights from setting off the receiver and makes it easier to identify the laser beam signals. The laser receiver is designed to survive the tough construction site conditions. It is totally waterproof and can withstand a drop up to 5 feet onto concrete. Get expert precision with a single press of a button with the Spectra Precision HL450 Digital Laser Receiver.