For matching balanced 600 ohm lines, such as telephone lines. Incoming input signal causes mute terminal to be grounded. S-01S 1 kHz Sine Wave Signal Generator Generates 1 kHz tone as its output into the mixer. Ideal as a test tone for the audio system. Tone Generates both single and repeated chime tone, which can be used as paging, phone call, event time or warning signals.
External switches turn the signals on and off.