Pressure range 1. Under normal working conditions, the pressure range of the device is 60kPa 130kPa. 2. When the pipeline blockage occurs etc. in the device, the pressure produced by the device will not break in the range of 130kPa ~ 400kPa 3. Residual liquid volume 0.7mL 4. Machine noise Noise of machine in normal operation: 65dB (frequency-weighting characteristic A). 5. Enclosure leakage current Normal condition 0.1mA; Single fault condition 0.5mA 6. Patient leakage current Normal condition 0.1mA; Single fault condition 0.5mA. 7. Droplet particle size 1um-5um