I'm thinking all this time I have a real DSE901 since it says that on the owners manual. Come to find out it's a RN4075. Not that I care any since it's been a real work horse. The RN's have SHOXXX on the battery and the DSE's have SLBXXX. It was impossible for me to make out what it says just by looking at it so I took a macro picture of it and it's easily readable now. Hey, I was board!
