Spectra Precision HL450 Digital Readout Receiver

The Spectra Precision® HL450 Laserometer is an easy-to-use tool that accurately measures elevations across the site, and is ideal for use with any rotating transmitter.

The HL450 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’s 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 Spectra HL450 Laserometer features a 4-inch reception height—twice the industry standard—for faster laser beam acquisition. It also includes a patented anti-strobe sensor that blocks interference from construction lights, making it easier to detect true laser signals. Built for the jobsite, the HL450 is waterproof and survives drops up to 5 feet onto concrete without damage. Spectra HL450 Laserometer – Key Features and Benefits: Digital Readout of Elevation – Instantly displays the exact numerical distance from on-grade, eliminating guesswork and reducing time spent moving the receiver. Anti-Strobe Sensor – Filters out flash from construction strobes, preventing false readings and helping identify the real laser beam. 4-Inch Reception Window – Captures the beam faster and keeps you in the signal longer for increased productivity. Tough, Waterproof Housing – Designed to handle the harshest jobsite conditions with less downtime from drops or weather. HL450 Receiver – Ideal For: Cut and fills General grading Foundations, forms, and footings Excavations

Working Radius
(Laser Dependent)
3 - 650 feet

Environmental
Waterproof, Dust-proof to IP67

Laser Detection Height
4-INCH

Detectable Spectrum
610 nm ... 900 nm

Numeric Readout Height
3-INCH

Beeper Volumes
Loud = 100+ dBA
Low = 65 dBA

Accuracy
(Dead-band)
Fine 1.0 mm 0.05 in 1/16 in
Medium 5.0 mm 0.20 in 1/4 in
Calibration 0.1 mm 0.01 in 1/64 in

Power Supply
2 x 1.5 Volt “AA” batteries

Reception Angle
± 45° minimum

Dimensions
6.6” x 3.0” x 1.4”

Battery Life
70+ hours

Operating Temperature
-4°F... +140°F

Automatic Shut-Off
30 minutes

Storage Temperature
-40°F...+158°F

Crazy Simple
The laser receivers all include a display on the front and back for easy visual indication of detector status and grade information. The display shows proportional arrows to help you find the on-grade position rapidly. An adjustable audible tone indicates high, low and level. All basic functions are a single press away. Set your accuracy and loudness levels and get to work