Mobile Guardian MD4 – Parts Identification and Light Indicators On Device from left to right: Battery indicator out of the charger:No Light – Normal/Battery OKBlinking Red– Indicates a low battery on the mobile deviceBattery indicator in the cradle:Solid Red– chargingNot light- fully chargeNetwork connectionSteady Green Flash- Connected to the cell networkRapid Green flash- No cellular network connection.GPS indicatorSteady Yellow Flash- every few seconds to indicate the GPS signal is good.Charging CradleA Yellow light will be lit only when the mobile device is sitting in the charging CradlePower ButtonLower right-hand side of mobile device