... are not limited by code.Meter code:rate meter,cyclic display meter,Display mode setting,code,meter number,Consumer number,clock.Open ... ,Open terminal cover and record,weak battery.LED: Calibration meter pulse indication and LED always light afterpower on, when there ... the light will be off within 80ms.Output:Calibration meter pulse outputSystem diagnose:Monitor crystal oscillator when power on,EEPROM, ...