Features: 12-lead simultaneous standard resting ECG One-touch operation Concept of floating input circuit meets IEC safety standard High-resolution thermal printing array system Frequency response is as high as 150Hz Capable of printing continuously on channel trace and annotations including lead mark and parameter such as sensitivity, paper speed and filter operation status High resolution digital filter inhibits baseline drift without affecting ECG waveform Rechargeable battery supporting more than 50 patient examinations Specification: Safety standard: IEC class I, type CF Input circuit: Floating; Protection against Defibrillator effect Lead: Standard 12 Leads, Lead change automatically Patient current leakage: <10uA Input impedance: >=10MOhm Calibrating voltage: 1mV+-3% A/D conversion: 12 bit Frequency response: 0.05Hz-150Hz (IEC) Time constant: >3.2seconds CMRR: >80dB, >100dB (with filter) EMG filter: 35Hz (-3dB) / 25Hz (-3dB) Sensitivity: 1/2, 1, 2 (cm/mV), Conversion Deviation<=5% Recording system: Thermal-array 8 dots/mm ( vertical ) 16 dots/mm ( horizontal, 25mm/sec ) Paper speed: 25, 50mm/s+-3% Recording paper: 50mm,20m, high-speed roll Input circuit current: <=50nA Power supply: AC: 220V / 110V, 50/60Hz DC: 12V rechargeable battery Skin voltage tolerance: +-300mV Noise level: <15uVp-p Dimensions: 310x230x70mm Dimension of packing: 400x280x160mm Weight: 2.75kg