RAE Systems MCB3-A1C1100-430 MULTIRAE PRO,CSA.PGM-6248.10.6EV, 5000PPM.LEL.H2S (0.1-100 PPM).DUMMY.DUMMY.900MHZ WIRELESS.ALK. BAT..MONITOR ONLY by Honeywell
SKU: RAE-MCB3-A1C1100-430