15 inch patient monitor USA Brand ECG, HR, RESP, NIBP, SPO2, RR, TEMP, ... side stream, main stream),Multi-gas/O2Environment Ambient TemperatureOperating temperature: 0~+40 centigradeOperating temperature: +10~+35 centigrade (If use IRMA OR ... )New and fully charged battery at 25 centigrade ambient temperature and NIBP work on AUTO mode for 20 minutes ... ~85 dB measured at 1 meter 15 inch patient monitor