Authentic Dish Network 20.1 remotes use 4- AAA batteries and will have the Dish logo on the remote.
The 20.1 remote is the upgrade for the 20.0 and contains more codes for newer Televisions.
Learns codes from other IR remotes
The 20.1 will control all Dish receivers in IR mode. IR requires that you point the remote directly at the receiver. Newer receivers like the Hopper and Joey will need to be set to ir mode to use this remote since they originally shipped with a UHF remote that does not require direct line of sight with the receiver.