US Patent 10958026 Contactless thermometer for an in-wall power adapter

A contactless thermometer for an in-wall power adapter is described. The contactless thermometer may comprise a first contact element of a plurality of contact elements configured to receive a power signal from the in-wall power adapter; a transformer coupled to the first contact element, wherein the transformer converts the power signal from a first voltage to a second voltage; a transmitter adapted to transmit a signal from the contactless thermometer; a receiver adapted to receive a reflected signal based upon the transmitted signal; and a control circuit coupled to the receiver, wherein the control circuit determines a temperature based upon the reflected signal.