Agatec MR240 240 Degree Site Display Machine Control Receiver 240 Degree pick up window ensures pick up coverage on any job site Extra strong rare earth magnets ensure that detector stays in place, even on the most rugged job sites 5.5-Inch capture window provides wide field of view for laser beam pick up Bright LED indicators provide user with visual reading of grade position Waterproof construction ensures years of performance and protection from the elements