Analog Input SmartLeadP-811 Rev B (May 2019)229 Accessories and Optional Modules9.1 AccessoriesThe Analog Input SmartLead is either open wired (displayed in Section 6 ā no accessories) or usedin conjunction with a 2.5 mm TRRS Mating Connector as displayed below.10 Cleaning10.1 Safety Precautions When CleaningWARNINGOnly use a damp cloth with mild soap and water or isopropyl alcohol to clean the UltiumSmartLeads.Do not immerse Ultium Sensors or SmartLeads in any water or liquid.11 Maintenance11.1 Device Software (firmware) updatesThe internal program (firmware) inside the various Ultium devices can be updated via MR3. Theuser will be notified within the Ultium System hardware setup if an update is required. Ensure thatall sensors are placed in the Ultium charging doc and that the charging doc is connected to theUltium receiver prior to initiating the firmware update. If you start the update prior to completingthis step, you may need to update again (firmware update button will still be present in hardwaresetup).