Lower the Fish Hawk TD to record water temperature every 5-feet from the surface to the bottom. Locate the depth of fish by finding their preferred water temperature within the water column.   

• Attach to a fishing line with a weight
• Samples multiple times per second for unmatched accuracy 
• Two operation modes
• Determines the depth of Dipsy Divers, lead core line, and more
• Sealed internal lithium battery provides many years of daily use
• 300-foot maximum operating depth 
• US Patent# US 8,875,570B2