The Rotary Detector 1,220m detects the red laser line up to 1,220m (Diameter) for quick and easy elevations. Its durable rubber over-mould housing allows it to withstand drops up to two metres. 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 detector. The Rotary Detector 1,220m is compatible with the M18™ Dual Grade Rotary Laser 1,220m (4000') Red (M18RL1220).