This module is ideal for tarp or lift applications. It can also be used on hoist, hatches, winches, snowplows, intake/exhaust fans, vehicle outriggers and other reversing applications. When the appropriate control circuit is energized with a pulse it will reverse the direction of the motor. Product Features:High performance silver tin oxide contacts assure long cycle life.70A at 12V DC intermittent, max On time 5 mins; Off time 3 mins; 50A at 12V DC continuous.Load current inrush: 150A. Pull-in voltage 7.8V max.Low coil current draw. Coil resistance 82 10%.Vibration resistance: 10-55Hz. Double amplitude 1.5mm.Environmental: -40C to 85C. Rust and moisture-resistant plastic housing.Fully sealed to IP-67 with high strength epoxy for total moisture protection.Ignition protected.Tin-plated brass studs and hardware for corrosion resistance.Dielectric strength: 500V RMS between coil and contact.For intermittent operation, control switch should be Mom On-Off-Mom On; for continuous operation On-Off-On.