The transmitter is located within the battery compartment and picks up the remote's internal RF frequencies - sending them to the "space ship" receiver. Why is this significant?

Using an EH4104R single zone fire RF receiver with relays and an EH1115EOL single input fire RF transmitter, a wireless link can be easily created for any fire switch with standard contacts.

To pair a transmitter with the RF module, a magnet needs to be held near a reed switch on the module – one Ferret receiver can learn up to 30 transmitters. Various actions with the magnet can: add a ...

What’s more, Engineered Audio also announced the RemoteRemote, a wireless remote control designed especially for Apple’s iPod.