Wireless Spy Camera - Philips Wireless Hdmi Transceivers.
Wireless Spy Camera
A hidden camera is a still or video camera used to film people without their knowledge. The camera is "hidden" because it is either not visible to the subject being filmed, or is disguised as another object.
Lacking or not requiring wires
radio: medium for communication
having no wires; "a wireless security system"
transmission by radio waves
HC-CNOPN
hidden wireless spy camera in a kitchen appliance can opener
HC-ARWCK
hidden wireless spy camera in an airwick air freshener