Lead: Standard 12 leads (I,II,III, aVR, aVL, aVF, V1 to V6) Lead acquisition: 12 leads synchronously acquisition Sampling rate: 32000Hz Working mode: MAN, AUTO, R-R, STOR Filter: AC Filter: 50Hz / 60Hz / Off EMG Filter: 25Hz / 45Hz / Off CMRR: ≥ 120dB (with AC Filter) Input circuit: Floating; Protection against defibrillator effect Input impedance: ≥ 2.5MΩ (10Hz) Patient current leakage: <10μA Frequency response: 0.05-150Hz (-3dB) Calibrating voltage: 1mV±5% Sensitivity: 2.5, 5, 10, 20, 40, mm/mV (±3%), Auto Paper feeding speed: 6.25, 12.5,25, 50mm/s(±3%) Accuracy of data: <±5% or <±40μV Time constant: ≥ 3.2s AD conversion: 12 bits Inter-channel interference: <2% Noise level: <30μ Vp-p HR detection range: 30-300 BPM (±1BPM)

Amplitude: 2mV-250mV Width: 0.1ms-2.0ms Sampling rate: 4000Hz/Channel

Recording way: Thermal dot matrix recording Recording format: 3chx4+R, 6chx2, 6chx2+R, 1 minute rhythm lead record Paper specification: 112mmx27m, roll paper

LCD display: 800x480 graphic 7 inch color touch LCD Patient cases storage: 250 patient cases ( Internal SD card is optional ) Communication interface: USB, UART AC power supply: 110-230V (±10%), 50/60Hz (±1Hz), power 60VA DC power supply: Rated voltage/capacity: 14.4V, 2200mAh, Lithium battery Rated charging current: 1300mA Rated charging cycle number: not less than 500 times Fuse specification: TZAH/250W, Φ5X20 Measurement and weight: 300mm230mm75mm, 2.8kgs

Working Environment: Ambient temperature: +5℃ ~ +40℃ Relative humidity: 25% to 80% (no condensation) Atmospheric pressure: 700hPa – 1060hPa Storage Environment: Ambient temperature: -20°C ~ +55°C Relative humidity: 25% to 93% Atmospheric pressure: 700kPa–1060kPa