3 x Water Level Sensor PP Float Switch DP3500. 3 x Water Level Sensor PP Float Switch DP5200. Float Ball Material: P.P. Float Body Material: P.P. Max Switching Current: 0.5A. Cable Length : 38cm / 15";Switch Body Size: 45 x 17mm / 1.8" x0.7" Thread Dia (Approx.).
eBay