The CLF 100 is a flush mount loudspeaker that can be recessed into a wall or counter top with a elliptical paper cone loudspeaker. . The CLF100 Visitors unit is constructed from steel and has full Duplex two way communication with the CLS100 Staff unit. The steel constructed Visitor CLF100 unit is a flush mount loudspeaker that can be recessed into a wall or counter top. Elliptical paper cone loudspeaker (90 x 50mm), Frequency response 180 – 16 KHz, 5 Watts, SPL 85dB. Must be used in conjunction with the amplifier unit CA100, and visitor microphone CML100 and CLS100 Staff unit.