Our Red Exterior Dual Slope Rotary Laser Receiver detects the red laser line up to 4000 ft (Diameter) for quick and easy elevations. Its durable rubber over-mold housing allows it to withstand drops up to two meters. With its built-in strobe protection, it reduces interference from other light sources on the jobsite which ensures a consistent and accurate readout. Featuring Automatic Grade Match, you can quickly find and match existing grades by accessing it through the dedicated button on the receiver. The MILWAUKEE® Red Exterior Rotary Laser Receiver is compatible with the M18™ Red Exterior Rotary Laser (3704-21) and is backed by a 2-year tool warranty.