GM40T depth/temp sensor...

[Len]

I recently bought a couple nice (used) Canon electric d/riggers and the guy I bought them off of gave me a GM40T depth/temp sensor..Anyone out there have much experience with these little units?..thanks for any help or advice on its use...Tight lines....Len

[Bob G2]

Great little units. While it is nice to have a SubTroll or FishHawk speed/temp unit, the GM40T can be useful for finding thermoclines down to 100 feet.