Fully submersible, non-corrosive pure titanium probe. Provides an active electrical ground for freshwater & marine systems. also great for ponds, live seafood systems, terrarium, etc. easy to install & conceal. Includes 10FT wire lead & suction mount. Protects aquatic animals from unsafe & unwanted stray voltage generated by pumps, heaters, light systems & other electrical devices. Reduce stress to animals & promotes a healthy aquatic environment. Please read instructions. DIRECTIONS: Once an active ground has been verified, install the titanium probe using supplied suction mount inside your aquatic system or sump. Fully submerge probe for best results. Plug the other end directly into a three-pin receptacle using a drip loop. If a three-pin receptacle is not available, remove the receptacle plate & attach the ring terminal to the retainer screw on any two-pin outlet receptacle. For device to function properly, use of extension cords or use of extension cords or power strips is forbidden.