The LI4278 is backward compatible with its key accessory – the cradle – which works with its cousins, the LS4278 and DS6878. OK Notification: Beeper, LED indicator. Radio Range: 330 ft./100 m. 1x USB Cable.

The LI4278 is backward compatible with its key accessory – the cradle – which works with its cousins, the LS4278 and DS6878. OK Notification: Beeper, LED indicator. 1x RS232 Cable. Cordless Type: Bluetooth V2.1.