Application- The Float Switch Can Be Used With Hydroponic Systems, Saltwater Tanks, Freshwater Tanks, Gardening, Aquariums To Control Water Heads, Pet Bowls, Tanks For Peugeot 108 AntennaFunction- The Switching Voltage (Max) Is 100V Dc And The Switching Current (Max) Is 0.5A.Detect The Level In The Tank To Turn On/Off The Pump, Indicator, Alarm Or Other Device For Opel Astra H AntennaWorking Principle- The Front Floating Head Of The Liquid Level Sensor Will Float At Different Angles Depending On The Liquid Level And Then Transmit Information With Electrical Signals To Turn On/Off Pumps, Indicators, Alarms Or Other EquipmentAdjustable Operation- The Sensor Can Detect The Liquid Level In The Storage Tank And Can Be Installed As A Normally Closed Switch/ Normally Nt Open As Needed With Switches, Indicators And Other EquipmentNon-Toxic Materials- Our Water Level Sensor Uses Non-Toxic Plastic Materials, Which Will Not Pollute The Environment During Use