Retail merchandise hook with radio transmission

A retail theft deterrent system comprising:

• a signal-emitting retail display device comprising:
• a wire have a top portion and a bottom portion, the top portion configured to support a label holder, the bottom portion configured to store one or more retail items;
• and
• an electronic unit that includes an emitter, the emitter being configured to emit an audible alarm or warning signal, and configured to wirelessly transmit a signal to a remotely-located alarm box indicative of the audible alarm or warning signal;
• wherein the wire is electrically coupled to the electronic unit such that the wire functions as an antenna for the transmission of the signal to the remotely-located alarm box;
• and
• the remotely-located alarm box comprising:
• a receiver configured to receive a wireless signal from one or more signal-emitting retail display devices;
• an alarm box emitter configured to emit an audible signal indicative of the wireless signal received from the one or more signal-emitting retail display devices;
• and
• one or more terminals for connecting the remotely-located alarm box to an output receiving device, the output receiving device configured to alert a user to a theft condition.