... Specifications ModelXFT-8001Induction SystemBipolar single channelHeart rate range30 to 240 bpmAccuracy+-2bpmDisplayGraphic LCD 240*160Memory28 measurementsElectrical SafetyInternally ... Humidity+5ºC to +40ºC, 30% to 80 % RHStorage Temperature and Humidity-10ºC to +60ºC, 10% to 93 % ... unavailable, when people feel heart discomfort, they go to hospital, but when they arrive, the heart ...