Kit Contents. x2 of each. ULN2003AN (x2) Darlington Array. MAX232CPE (x2) RS232 Driver Receiver TTL Converter. LM317T (x2) Adjustable 1.2-37 Volt. 1.5A Regulator. L7812CV (x2) 12V 1.5A Regulator. L7805CV (x2) 5V 1.5A Regulator.
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