TOM Starter Kit - Pump Version. Measures OTR, CTR and RQ in 4 shake flasks; Contains: TOM supply module 342x136x93 (LxBxH), 100-260V, input voltage, USB 2.0; TOM Sensor module - pump 377x99x102(LxBxH), ambient pressure, 15-40°C, 30-85% rel. humidity, 0-16% CO2, 0-25% O2;