SE-1 Electrocardiograph User Manual Introduction
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2.2 Key Panel and Keys
1) Indicator
Mains supply indicator: when the device is powered by the mains supply, the
indicator will be lit.
Battery indicator: when the device is powered by a built-in rechargeable lithium
battery, the indicator will be lit.
Battery recharging indicator: after you connect the power cord to the outlet and
press the mains switch, both the battery recharging indicator and the mains
supply indicator will be lit.
Note: When the device is powered off, the recharging indicator is still lit after t
he battery is fully charged.
2) SENS (Sensitivity Switch Key)
The sensitivity switch order: ×1 → ×2 → AGC → · 25 → · 5.
The measurable and recordable ECG signal range varies with the sensitivity, as the
following list shows.
Option Sensitivity Signal Range
×1 10mm/mV -2.5mV ~ +2.5mV
×2 20mm/mV -1.25mV ~ +1.25mV
AGC Adjust sensitivity automatically Vary with the adjusted sensitivity