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You can use an Ocelot and a SECU16 for this application. The Ocelot has a IR output to control your TV. The SECU16 has 8 inputs and 8 relay outputs. You can connect your switch to one of the SECU16 inputs and when the switch is flipped on, the Ocelot will turn the TV on, and then when the switch is off, turn the TV off.
Most projectors are controlled via Serial (RS232). You can also connect your Day/Night switch to a different input on the SECU16, so that when the switch is turn to day, the Ocelot will send the serial string to the projector putting it in Day mode, and when the switch is flipped to night, send the serial string to the projector putting it in economy mode.
Kevin Barrett
ADI Tech Support
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