The SS3 condensate overflow switch can detect clogged air conditioning drains and automatically shuts down the system to prevent water from overflowing and damaging floors, walls and ceilings High Quality: The SS3 condensate overflow switch is made of high-quality materials, and the magnetic reed switch will not stick or rust, making it safe, reliable, and stable in performance Water Leak Detector: When excessive water is detected in the pot due to drainage blockage, the emergency shut-off float switch will activate and automatically shut off the heating, ventilation, and air conditioning systems to prevent system damage and protect your home Easy to Install: You just need to connect the SS3 switch to the side of the pot and use the nuts to connect the wires to the HVAC system. And the SS3 can be installed on primary or auxiliary drain pan. You can use PTEE tape to connect the adapter for high water tightness Color:Black Material:Plastic+Metal Package Contents: 2 * SS3 condensate overflow switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.