Build your own wireless transceiver:
Have you ever wanted to send data from a sensor or project wirelessly? This simple circuit allows you to build your own wireless transceiver using two ICs, a transistor, and two resistors. The IC is from Melexis and uses On-Off Keying modulation and can be battery powered.
Via Electronics Lab.
Cool, but where is the receiver part?
Please go away… Silvershit product
Apparently Digikey has no idea what an MLX90125 is. It knows what the other one is