The 318ALD31V-2 Stinger Visor Remote is compatible with the Allstar 9931T-318 remote and the Allstar model 931R-318 radio receiver. The Stinger 1-Button Remote is also compatible with any Allstar, Allister, or Pulstar remote that uses 318MHz frequency and 9 trinary DIP switches. The remote includes a visor clip so it can be attached to the sun visor in your vehicle.