Input impedance	> 10 M – Ohm
Input dynamic range	+/- 2 mV
Bandwidth	0.15 – 40 Hz
CMRR (Common Mode Rejection Ratio)	> 60 dB
A/D conversion	12 bit
Sampling Rate	250 samples/sec
Measurement Time	300 seconds
Display	LCD display panel
Input	External auxiliary electrodes and conductive adhesive ECG pads
Output	USB interface
Power Supply	1.5V (AAA) X 2
Size	120x80x20 mm
Weight	116 g excluding batteries
Environmental Conditions:
Storage temperature	-4 ~122°F (-20°C~ 50°C)
Operating temperature	50°F ~104°F (10°C ~ 40°C)
Humidity	25% ~ 95%
Measurement Range:
Average heart rate	45 to 180 bpm
ST segment	-3 to +3 mm

Taking a measurement.

Steps	Descriptions
	Slide the socket cover to expose the auxiliary electrode cable socket and connect one end of the cable to the device. Connect the split ends of the cable to the adhesive ECG electrode pads. (Users can buy qualified electrode pads from qualified medical device and pharmacy stores.) Place the RED electrode on the right arm and the BLUE electrode on the left arm as shown.
	Press the  button once to start measurement. - “Measure” will appear and measurement will take 300 seconds. You can stop recording by pressing the button  for 2 seconds. - will flash on the LCD panel during recording. Do NOT move or talk during recording to get good stable signals. - Data will be saved automatically after each recording. The device can store 6 data files. - Hold the  button for 3 seconds to power off the device. The device has an auto-off design if it is left idle for more than 2 minutes.