Description:1.This is a Mini stainless steel float switch.2.This float switch is a device used to sense the level of liquid within a tank,the switch may activate a pump,an indicator,an alarm,or other device.4.Light weight and simple working principle,high reliability.5.The versatility of this vertically mounted sensor means that it can be installed either at the top or base of your tank,depending on whether you wish to detect the water rise or fall.6.The float level switch is widely used in electronic,electrical,chemical,water treatment. Installations:Top mount, switch is Open when water is at High levelTop mount, switch is Closed when water is at Low levelBottom mount, switch is Open when water is at Low levelBottom mount, switch is Closed when water is at High level