Features With auto-interpretation function; can assist doctor to diagnose; Color LCD makes the images more clear for guaranteeing the reliability of the images ; Designed with technology of Digital Signal Processing and Digital Isolation; Synchronously 12 lead acquisition and printing 3 live leads record of them, Using high resolution thermal roll paper for recording ECG waveform, Multiple optional digital filter ( including baseline drift filter ) , using auto-regulation baseline drift filter which can inhibit any baseline drift , or curb caused by patient' s movement and auto- optimize the position for printing; Auto measurement / analysis system shows the real-time heart rate which makes it easier for doctor' s diagnosis; Can store maximum of 128 patients' ECG data and enable user to replay data analyze and print it from database; High-speed USB interface and traditional RS-232 interface are both built– in for communicating with computer as well as other devices; Data can be received through one of the interfaces and displayed by the software which is also provided by our company ( optional) ; Specifications: LCD display: 640× 480 TFT 5.7 inch graphic LCD Lead: standard 12 leads Sampling method: 12 leads synchronously acquisition CMRR: > 80dB, > 100dB ( with AC filter) Sensitivity: AUTO; 2.5; 5; 10; 20 mm / mV Paper speed: 6.25; 12.5; 25; 50 mm / s( ± 3% ) Paper size: 80mm x 30m roll type Recording mode: Thermal Array printing Power supply: AC: 110-230V ( ± 10% ) , 50/ 60 Hz± 1Hz; 40 VA DC: 14.4V rechargeable Li-ion battery Package collocation: Single unit size: 31 x 23.5 x 6.6 ( cm) Net weight: 3.8 kg ; Gross weight: 5.5 kg Normal collocation: roll paper, patient cable, power cable, limb electrode ( limbnip) 4 pcs, chest electrode ( sucking ball ) 6 pcs, AC electric fuse 2 purchase.