Accessories for water detectors. The hanging float switch made of plastic is reliable, maintenance-free, and wear-resistant, and easy to install. The switch contact closes at approximately 4 cm water level and activates the input of the water detector. By turning the float body, the reverse switching function can also be obtained. The hanging float switch has a built-in weight, ensuring that the float switch hangs vertically in non-flowing media. The cable is securely held by a PG fitting, can be positioned infinitely, and can thus be suspended from above into shafts, tanks, or barrels. No additional mounting work, such as with brackets and rods, is required.