The CLM gooseneck microphones are specially designed to achieve a perfect voice reproduction while using them in conjunction with CDM900, CFM and CFL delegate unit of Senator 900 system. They are available for 3 di erent length: • CLM-260 = 10,2" (26 cm) • CLM-480 = 18,9" (48 cm) • CLM-60L = 23,6" (60 cm) Their polar pattern is a cardioid shape and uses a high de nition unidirectional electret condenser capsule. The red colored LED ring on each CLM microphone will be illuminated to give a status information about each delegate unit. When the delegate unit is in "Talk" mode, the LED ring will be fully illuminated. When the delegate unit is in "Speech Request" mode, the LED ring will ash. When the delegate unit is in "Hold to Talk" mode, the LED ring will ash twice every 10 seconds.