This is a 148786 gray Dish Network Satellite TV Remote Control. The 148786 is equipped for Dish on Demand DVR. It has the removable number at the bottom so you can differentiate your remotes.
Some of the other numbers are 6.3 IR/UHF PRO FCC ID DKNFSK03 from EchoStar Technologies Corporation.
The battery door is included and this model has the A/B switch available in the battery compartment if you need it.
The FCC ID is DKNFSK03. This number may vary on your remote.