会议麦克风产品B40S参数：
B40S
补充说明：
B40S
相关会议麦克风产品：
B10 | B10S | B30S | B60S | B40S | B70S | B50S | TM-880 | TM-111 | TM-130 | TM-342 | TM-372 | TM-260L | TM-101 | TGC-6XX | CM-68 | GC-60 | GC-61 | TCM-XXX | BM-10-11 | GD-610 | GD-620 | GC-600 | GC-601L | GC-700L | GC-760 | GC-520 | GC-80L | GC-90MC | GC-82 | GC-80L
