Basic characteristics 10 universal ECG connectors that can be connected to various electrocardiographs and monitors 12 lead independent electrocardiogram signal simulation By connecting to the computer through a USB interface, it is possible to output waveforms from commonly used electrocardiogram databases 48 built-in ECG waveform options High level output (200 times the electrocardiogram signal) Amplitude selection: 0.5, 1.0, 1.5, 2.0mV; Accuracy ± 2% (standard), ± 0.5% (optional) Time and frequency accuracy ± 0.5% Respiratory signal simulation Energy saving design with 2 AA batteries Supports both rechargeable and non rechargeable batteries Low battery level sound prompt Auto Power Off Simple and convenient operation Easy to carry