DESCRIPTION:

1.1 Basic Parameters:
SpO2  test range：70%~100% ；
SpO2  test tolerance： tolerance is ±2% when 90%~100% :；
SpO2 test tolerance：Tolerance is ±3% when 70%~89%；
Pulse Velocity：（30~245）bpm；
Pulse Velocity test precision：±3 bpm。
1.2 average without failure time: above or equal to 1000hours.
2 Requirement:
2.1 normal working condition
a）environment  temperature：5℃~40℃；
b）relative humidity：≤80%；
c）atmospheric  pressure：86kPa~106kPa；
d）working voltage：DC.5V ，Tolerance +5% and -10%。
2.2 Appearance and structure:
2.2.1 Product  color is average , smooth surface. There is no broke and scratch. Deformation. There is no damage or oxidation for the plug and cable, probe .
2.2.2 the connection parts were fixed.
2.2.3 the plug ,cable ,probe were fixed reliably.