Water Level Switch This product is designed to guarantee performance and reliability. for over 40 years millions of customers have been relying on RADAR's products to meet their needs. ST-70AB liquid level control switch is applicable to all kinds of water tanks for maintaining liquid levels. It may be used to control water either inflow or outflow by direct pump control or to control magnetic starter switch. < Specifications Power: 110/220V, 50/50HZ Max.Pump Power By direct Control: 1.0HP Connection : 1'' G. 3/4''G Mounting: Vertical Installation Control Range: 0.2-5.0 Meters Temperature Limit; 5~60C