Total Length: 67mm/2.6"; Float Ball Size (Approx.): 24 x 23mm/0.94" x 0.91"(LD); Thread Diameter (approx.): 10mm/0.39"; Cable length: 40cm/15.7"_Maximum switching voltage / current: 110V DC / 0.5A_HOW TO WK - Using a magnet to detect the reed switch. The float switch is mainly composed of a magnetic spring switch a float. There are magnetic materials in the float. When the float rises falls with the water level, it will touch the magnetic spring switch to detect the position of the liquid_WIDE APPLICATION - The float switch can be used f water heating equipment such as water dispenser, water heater, humidifier, etc. It can also be used f water tower, drainage pool, water tank, culture pond, etc. _PLEASE NOTE - As the current the switch can carry is very small (0.5A), you need to use a relay contact when connected by a load, the relay contact is not included here.