DURABLE: With robust over-molded construction, the receiver is IP54 rated and ensures splash water and dust protection. DUAL-SIDED LED INDICATOR: The LED indicator provides easy visual readout on both sides of the receiver. QUICK-RELEASE MOUNTING BRACKET: The bracket allows the receiver to be attached to a leveling rod. ADJUSTABLE AUDIO INDICATOR: The receiver gives clear signal of on-grading positioning and adjusts to worksite noise levels. EXTENDS WORKING RANGE: The receiver detects lines from Bosch GCL 2-160 up to 165 feet. HEAVY-DUTY MAGNETS: The receiver can attach to metal surfaces.