I am trying to build 4 channel RF remote control device for controlling home appliances. I am using HT 12E & HT 12D. I have attached the circuits I am using, its working but not the way I want. Every time I press one push button or any of AD8 to AD11 makes low, the respective output on HT12D is going low. When I press another push button, its resetting the previous state and making only that respective output low. I want to operate these outputs independently. For example, I will be using one output for FAN and one for Light, etc., When I want to switch on the FAN, it should not change the state of light or any other output. Can someone please help me how to achieve this? Do I need to use some converter like binary to something? Any ideas or help is greatly appreciated.
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