ITEM NAME:Stainless Steel Water Tank Level Controller Liquid Sensor Vertical Float SwitR3C Material: stainless steel Cable length: 25cm Contract rating (Max):10W Switching voltage(Max):100V DC Switching current(Max):0.5A Breakdown voltage(Max):220V DC Carry current(Max):1.0A Contract resistance(Max):100mÃŽ © Temperature rating:-30~+125Â °C Package Contents: Float Switch x 1.A float switch is a device used to sense the level of liquid within a tank. The switch may actuate a pump, an indicator, an alarm,or. It can be easily converted from normally open to normally close by inverting the float.