What do LED Indications mean on PDQ 2nd generation lock?

Normal Conditions

LED1	LED2	LED3	LED4	Buzzer	Event & Description
				ON	Device is powered on
					Device is in Firmware Upgrade Mode
					Mobile is Connected
					Device is calibrating
				ON	Device is calibrated successfully
				ON	Device is locked/unlocked successfully
					Device is waiting to be auto-locked(Auto lock timer in PDQ Smart App->device settings)
					Device is waiting to be auto-locked and Mobile is connected
				ON	Key Pressed on Keypad
				ON	RFID Card has been swiped
					User is authorising with SR Bridge
					Device is already locked/unlocked
				ON-3 times	Device is factory reset
					Keypad is on

These indications required Attention!

LED1	LED2	LED3	LED4	Buzzer	Event & Description
				ON-3 times	Please calibrate device from PDQ Smart App->Slider Menu->Select Device from Product & Network Device List->Device Settings->Calibration
				ON-2 times	Device Calibration is failed. Please try again. if problem persists, contact customer support
				ON-2 times	Device cannot perform Lock / Unlock Operation. Please check the mechanical
					User is not authorised to operate the device. Please check Access Control Rule on PDQ Portal
					Please check connectivity between device and bridge. This user is not in lock database and device requires connectivity with bridge to authorise this user.
					Please replace the batteries.
					Batteries are critically low. Please replace to operate the device