Designed for indoor service on AC or DC powered cranes (85-264 VAC or 120-370 VDC). The contacts are 10 amps, 270VAC/27VDC, and the range is 8in-150ft. The system provides 3 contacts for controlled slowdown. It also provides a fault relay to indicate problems or to cut out power to the crane. The system includes: laser, bracket, enclosed Laser Support Unit, reflector, and a 75m cable.