Features: 【High Quality Material】The water level sensor is made of high quality PP material, which has good corrosion resistance and sealing performance and a long service life.< /li> 【Easy to Use】A liquid level sensor is a device for detecting the level of liquid in a tank, which can activate a pump, indicator, alarm or other device. 【Wide Use】Use the ball switch for hydroponics, saltwater tanks and freshwater tanks, gardening, powerhead control aquariums, feeding bowls, fish tanks, filtering, heating, etc. 【Switch Setting】This liquid float switch can be installed as a normally closed/normally open switch as needed 【Voltage/Current】Switching power (maximum): 10 W; Switching voltage (maximum): DC 100 V; Switching current (max): 0.5 A; Maximum breakdown voltage: 220 V DC; Maximum load current: 1.0 A.