Fish finder Speed and Temperature sensors are very important electronic information when
trying to locate where the fish are.  An accurate speed sensor is important to know if your boat is
operating correctly.  Temperature Sensors help you locate warm or cool changes in the water.  
This will help identify where the fish are most active.
Eagle Speed/Temp Sensors
Lowrance Speed/Temp Sensor
Garmin Speed/Temp Sensor
Furuno Speed/Temp Sensors
Fish Finders Speed and Temperature Sensors