- 12 - © 2020 unitech Electronics Co., Ltd. All rights reserved.unitech is a registered trademark of unitech Electronics Co., Ltd.MS852B Plus User’s Manual■ Cradle LED indicatorDescription IndicationPower is on but host is not connected Solid Red LightHost is connected, BT is paired anddisconnected Solid Green LightSystem busy with data sending/receivingdisabledGreen LED togglingevery secondHost is connected, BT is connected andcradle is ready to send/receive data Solid Blue LightBT in pairing mode Blue LED togglingevery secondIn cradle Firmware Update Mode White Light onIn scanner Firmware Update Mode White LED togglingevery second■ Scanner Beeper indicatorBeeper Description IndicationScanner in Auto Operation Mode Power On with 1 BeepScanner in Wedge Operation Mode Power On with 2 BeepsScanner in Batch Operation Mode Power On with 3 BeepsAuto Power Off Alarm 3 short beeps at 15 seconds before power offPower Off Short beepGood Read with BT Connected Beep with medium soundGood Read with BT Disconnected Beep with short medium-high soundBT Connection Beep with low-medium-high sound