== Products ==
* [[Cirkit Prestel Link Amstrad Interface ]] ("It looks like a cartridge (8x5cm) for an Amstrad with a passthrough edge connector and a lead (70cm) comming out with a 5-pin DIN plug (male) at the end.")
* Cirkit twin-port serial interface (resold by [[Microstyle]])
* [[Cirkit serial interface]] (this is the serial interface that was bundled with the Prestel Link modem)