Detailed Product Description: Wireless card sharing system is ideal for sharing pay TV smart cards used in DVB-S, DVB-C, DVB-T receivers through air. The product has 3 client cards but no masterbox. An original pay TV card can be inserted in the card slot on the bottom of Splitter cards. Any of the 3 client cards can be set as master card. The other client cards will be inserted into receivers which you will use to watch TV. The master card will communicate with client cards, keep sending keys continually, then the client card will work like original card. You can watch pay TV channels with several receivers in different rooms, while only need to pay for one original card. This solution is useful when you have more than 1 receivers in your home and will save you for paying additional extra monthly fee for extra card. Encryption system can be opened: Irdeto Viaccess Conax Seca