I do not know how to replace the trigger & reset button by IR receivers?
the output will be connected to a relay and this said relay is responsible to active a device by pushing the remote control in front of the trigger IR sensor and the device is active till the reset IR button receives a pulse by the TV remote.
That sounds cool. But you didnt tell us the type of IR RECEIVER you want to use, they differ in pin configuration. One more thing are you going to keep both receivers in one place? Its like sending two dogs to get one bone.
IR's are common, they work by 2.5 to 3V and have 2 pins.
Because I guess that it is hard and causes Interference to keep the SET/RESET IR sensors side by side so No They would not be side by side (other wise it to be an easy way to do so).
SO I will put them back to back and so change the remote position to active each state,
"My dog has 4 legs and a tail. He will be good a watch-dog."
"My IR sensors are used at 2.5 to 3V and for they are for robot usages."
Can you see the similarities?