Olimex MOD-IO Atmel ATMega16 Quad Relay I/O Module

DC - Direct Current

AC - Alternating Current

Digital - A system that uses only 0s and 1s to transmit data

IO - Input/Output - the commpuncation between two devices or between a device and its operator.

Quad - Multiple items, meaning four

Feature - An attribute that makes something stand out.

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