... options: × 1, × 2, × 4, and × 0.5 four trenchesFrequency: 0.5 Hz - 100 HzCommon-mode signal inhibition: More than 70 ... S, 25 mm / S, 50 mm / S standard three stalls.HR: ± 5 bpmPrecision calibration signal: 1mv(peak, ± 3% accuracy)ST Detection: measurement ... : ± 1brpmResponse time: 1sGainsoptions: × 1, × 2, × 4, and × 0.5 four trenchesAlarm: Sound and LightAlarm range: (numerical preset alarm over ...