PC-5CL The speaker shall be suitable for use in clean rooms, hospitals and laboratory applications. The speaker shall include a 3.5” full-range cone driver and built-in 70.7 V matching transformer with 2.5 W tap. Sensitivity shall be 87 dB SPL (1 W / 1 m) and frequency response shall be 150 to 20k Hz. The speaker shall be operable within the temperature range of -4° F to +131° F. The clean room speaker shall be TOA model PC-5CL.