Kendi, that thing hit the remote receiver.
A remote receiver could then have been used to decode the modulated microwave signal and permit sounds picked up by the microphone to be overheard.
If the sensor detects smoke or heat seeping into the lower chamber, it triggers the transmitter to send a signal to a remote receiver.
The resultant time tagged phasors can be transmitted to a local or remote receiver at rates up to 60 samples per second.
Many devices were designed to be hidden in offices to pick up conversations and broadcast them to a remote receiver.
The remote receiver is always powered.
Radio triggering requires a transmitter electrically connected to the camera to trigger a remote receiver connected to (or embedded into) a remote flash unit.
A learning remote from an A/V receiver or an aftermarket universal/learning unit might be a better bet for trying to tie all of your components together.
Scott Mason's computer screens had been read by the NSA's remote electromagnetic receivers while he prepared his article for the following day.
The pitch of the tone changed to represent the received signal level, or FM receiver limiter voltage, at the remote receiver.