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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 Remote Mains Switch uses a high-security rolling-code system, so it is suitable for triggering motors that open doors or gates. It’s also very robust, allowing it to switch motor-based appliances like pool pumps and water pumps. Last month, we described the circuitry; this article concentrates on its construction, testing, set-up, and use. by John Clarke