RJ11 Telephone Landline Adapter Audio Output Recording Device This is a telephone adapter used to output audio from a telephone landline connection. The unit features two RJ11 jacks labelled "LINE" and "TEL" for connecting to a wall jack and a telephone handset. The audio output jack allows you to connect the adapter to a device like a digital voice recorder to record telephone conversations or output the audio directly to audio output devices such as loudspeakers. Included is a 3.5mm male-to-male audio jack cable. Included is one short RJ11 6P4C phone cord, male to male cable, that can be used to connect the main device to the landline input or the output for the landline phone handset. Another will be needed for ideal/optimum functionality.