Digital Single Channel ECG Machine 901A Features: Digital One Channel ECG Machine Simultaneous 12 leads acquisition Multiple operation mode ( Manual / Auto/ Ref. lead) AC/ DC power, Built in rechargeable Li-ion battery High resolution thermal printing array system High frequency response reach to 150Hz High resolution digital inhibits baseline One-touch operation able to enhance efficiency and relieve operation strain. Visual status due to light indicated touch-keys. Safety level corresponds to Class I, Type CF. Digital Single Channel ECG Machine 901B Features: n Digital One Channel ECG Machine n Simultaneous 12 leads acquisition n Multiple operation mode ( Manual / Auto/ Ref. Lead) n LCD to display operation status and wave-form n The wave-form is displaying synchronously on the LCD with 195 X65 dots n AC/ DC power, Built in rechargeable Li-ion battery n High resolution thermal printing array system n High resolution digital inhibits baseline n One-touch operation able to enhance efficiency and relieve operation strain. n Concept of floating input circuit meets IEC safety standard. n Visual status due to light indicated touch-keys. n Safety level corresponds to Class I, Type CF. n Self-test upon powering on. n Automatic measurement and interpretation of ECG waveform to relieve doctors from strain. n Multiple print formats include 6-channe and 12-channel. n AC/ Rechargeable battery for continuous examination when AC power supply is unavailable