... Low resistance measurementPower SupplyDC 9V (Zi-Mn dry battery R14S 1.5V 6 PCS, continuous standby for ... pole method, measurement current 3mA Max,820Hz; Voltage to ground: average value rectificationData ModeAverage value, maximum, ... "alarm hintBatteryVoltageWhen battery voltage decreases to about 7.8V, battery voltage low icon " "will display, reminding to replace battery.Power ConsumptionBacklight: ...