Table 7.

Final specifications of the designed system.

WS/parameter	Specifications
General	(i) Rechargeable battery
	(ii) Compatible with most android devices
	(iii) Small size, portable, and easy to use
	(iv) Comfortable for adult and old patients
	(v) Multiple parameters: ECG, HR, SpO2, temperature, and RR
	(vi) The ability of recording a video and data text of signals
	(vii) Sending autoalarm to the doctor/centers in different tools
ECG and HR	(i) ECG: single lead without the need for a third right-leg drive (DRL) electrode
	(ii) Heart rate detected by R to R distance
	(iii) Frequency range: 15.625 mHz up to 256 Hz
	(iv) ECG calibration: ±0.25 mV
	(v) Arrhythmia analysis: yes
SpO2	(i) Display: waveforms and digits
	(ii) Real-time display of PPG (photoplethysmogram)
	(iii) Measurement range: 1–100%
	(iv) Resolution: 1%
	(v) Accuracy: 2% (80–100%)
	(vi) Pulse rate range: 20–300 bpm
RR (respiratory rate)	(i) Method: air flow temperature
	(ii) Measurement range: 5∼50 rpm
	(iii) Accuracy: ±1 bpm
	(iv) Resolution: 2 bpm
Temperature	(i) Measurement range: 0∼50°C
	(ii) 0.1°C accuracy (37°C to 39°C)
	(iii) Resolution: 0.1°C