This plug-in accessory adapter lets you connect your favorite fish finder or sonar unit to your motor. Using these plugs won't affect the original manufacturer's warranty. Eliminates all external wires, hose clamps, and external attachment devices so you can concentrate on finding fish without causing damage to your fish-finding equipment. Original universal sonar systems feature a single beam transducer. New Universal Sonar 2 features a dual beam transducer setup with an integral temp sensor. As an additional benefit, Universal Sonar 2 adapters now feature a shielded waterproof connections standard. Connector plugs are not interchangeable. Brands supported include Eagle, Lowrance, Garmin, Humminbird and Vexilar.