GT8HW-TM transducer is perfect for shallow water fishermen who want clear bottom definition under the boat as well as crisp, clear and wide fish arches with excellent target separation. The wider beam width ? up to 24 degree beam angle ? provides a larger coverage area in the water. The 8-pin transducer features high wide band CHIRP traditional sonar (145-230 kHz) and has a power rating of 250 W. It can be mounted on the transom or a trolling motor. Follow the included installation instructions carefully to avoid damaging your boat. Frequency: CHIRP High Wide (145-230 kHz). Power: 250 Watts. Beam Width: 24?-16?. Maximum Depth: 800 ft. Freshwater. Depth/Speed Temperature: Depth and Temperature. Cable Length: 20′. Supported Deadrise/Transom Angles: 0?-70? Transom.