ImportantMD Evolution – Cordless DT412 / DT422 / DT43218ModificationsModifications not expressly approved by Aastra could void theuser's authority to operate the equipment.Intrinsic safetyThe DT412, DT422 and DT432 phones are IP64 classified, whichmeans that they are robust, dust-proof and waterproof, designedfor people working in tough environments.Preparing for useBefore using your phone the first time you have to charge andconnect the battery, see section “Installation” on page 145.Note: Place the phone in the charger and charge it for atleast one hour before using it the first time.Battery handlingThe Lithium Ion battery contains environmental polluting material. Ifdamaged, return it to a collecting point.Note: Only use the charger that is delivered with yourphone to charge the battery.CleaningClean the phone only with a soft, water dampened cloth. Usingsoap or any other cleaning materials may discolor or damage thephone. Clean the battery contacts using ethanol or isopropylalcohol.TreatmentAlthough the phones are resistant to water spray, dust and soil, youshould always handle it with care. Do not expose the phone todirect sunlight for long periods and keep it away from excessiveheat and moisture.
