Dateq SPL-3TS MKII , 2-Channel Limiter with Timer and Measuring Microphone, Adjustable Threshold and Output, Different levels are time-programmable (control via PC possible RS232), Automatic power interruption when the volume is exceeded for too long, For lead-sealing, 19"" 1U, Connections: XLR in / out and mic input, Software available to download here: www.dateq.nl