RAE Systems MCB3-A10689Z-420 MULTIRAE PRO,CSA.PGM-6248.10.6EV, 5000PPM.CL2.NH3.PH3 (0.1-20 PPM).GAMMA.900MHZ WIRELESS.LI-ION BAT. W/ ALK. ADP..MONITOR ONLY by Honeywell
SKU: RAE-MCB3-A10689Z-420