... grip; reasonable structure, advanced, contact capacitance. TNHAI-A Series (Rain-proof type) Crane Remote ControlAC-15500V~2A250V~5APlastic shell, beautiful, ... dust and rain, so this product especially suitable for open-air, with rain and snow, dust more than ... such as long-distance remote control of electric hoist, open-air conveyor belt materials, construction industry, electrical equipment.Normal ...