Accepts RC5 codes. The Philips RC5 Infra Red command codes are very common and will be available from any VCR with the Satellite Control facility. The Sky+ version accepts Sky Digibox IR command codes.
RC5 Codes

Outputs Sky Digibox codes. The Sky Digibox Infra Red command codes have been sampled, interpreted and compatible codes re-created. The Sky+ version outputs Sky+ compatible IR codes.
Digibox Codes

Atmel AVR Micro-controller. The Digibox Interface utilises the Atmel AVR range of  micro-controllers to accept the RC5 code and output the appropriate Sky Digibox code.
AT90S1200

Schematic & component list. The number of external components is minimal comprising only of power supply, voltage regulator, infra red transceiver, infra red led transmitter and switching transistor.
Schematic

Dimensions. 60 x 35 x 17mm.