Electromechanical off-line one-time key cipher machine for teleprinter traffic.
Based on two Olivetti Italy T2 series automatic transmitters. The transmitters were assembled with a common axle. One was used for the cipher key perforated tape, the second for the message perforated tape.
Used by the IDF during the Sinai War (1956) and the Six Day War (1967).
Power supply: 220 Volts AC.
