Scope of application:UT100Handheld Pulse Oximeter is intended for spot checking, continuous, noninvasive monitoring or recording of functional oxygen saturation of arterial hemoglobin (SpO2), pulse rate and pulse strength for adult, pediatric and neonatal patients. Technical Specifications: 1. Parameters: SpO2and Pulse Rate. 2. FourDisplaying Modes: Big Display Waveform Display Trend Table Display Horizontal Display 3. Power supply AC power adapter; Four AA 1.5V alkaline/Ni-MH cells.4. SpO2 Range: 0%-100%.Accuracy: ±2% at 70-100%;<70%, undefined.5. Pulse rate Range: 30-250bpm.Accuracy: ±2bpm at 30-250bpm.Environment Specification: Operating Temp.: 0 to 45°cStorage Temp.: -20 to +60°cRelative Humidity: 30 to 95%(Operating), 10 to 95%(Storage)