MS Series encoders and decoders are ideal for remote control and command, security, keyless entry, and a host of similar applications. The encoder IC allows the status of up to eight buttons or contacts to be transferred with high level of uniqueness via an RF or infrared link. The decoder then reproduces the button states on its outputs. The MS Series has several unique features that make it superior to competitive solutions. These include the ability to easily define user groups and assign permissions to individual output lines. The outputs can be latched or momentary and secure address assignments can be instantly changed without cumbersome DIP switches or cut traces. The large, twenty-four bit address size provides for over 16,000,000 unique addresses, making transmissions highly unique and secure, which minimizes the possibility of multiple devices having conflicting addresses. The decoder also identifies and outputs the originating encoder ID for logging or identification. Housed in tiny 20-pin SSOP packages, MS Series parts feature low supply voltage and low current consumption.