Adopt high-resolution thermal printing system(8 dot/mm), no need for any adjustments. Recording frequency: up to 150Hz. 
Real-time and continuously record the clear and accurate ECG waveform and annotation character(including lead mark, sensitivity, paper speed and filter state, etc.).
Full-digital filter design, anti-baseline drift, AC and EMG interference.
Adjust the baseline automatically, optimize the print setting and optional rhythm leads.