A few years ago, DEI sold Responder alarm systems under the Clifford, Python and Viper brands that used remotes with FCC ID EZSDEI7941 on the back. These aftermarket alarm systems have two-way communication. The FCC ID EZSDEI7941 was used on the two-way transceivers only. These included one with an OLED display and others with an HD SST color LCD display. The remotes were used on Viper 5501-SST, 5901-SST and 5902-HD systems; Clifford 20.7X, 50.7X and 590.2X systems; and Python 952 and 991 alarm systems.
Most of the original remotes have been discontinued. However, Remotes Unlimited has the Python SST color version in stock. It is Remotes Unlimited part number 072-6331.
For other DEI system remotes, you can visit the Remotes Unlimited website home page and search by the Alarm manufacturer, system brand and model.