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This new Secure Remote Switch uses rolling codes for high security. The DC-powered receiver fits in a compact plastic case, so it can be mounted pretty much anywhere. After explaining how the circuitry works last month, this second and final article has all the construction details. by John Clarke
This UHF remote switch uses a secure rolling code system. The receiver uses all through-hole parts, fits in a compact plastic case and can be powered from 12V or 24V DC. Up to 16 transmitters can be used per receiver; they fit into handy keyfob cases, and you can use a prebuilt transmitter module or discrete components. by John Clarke