All products are new and fully-tested OEM equivalent replacement parts
AC Adapter For Aastra 57i 6757i CT 57iCT IP Phone A1758-0131-10-01 Power Supply
Input voltage: 100V ~ 240Vac 50/60 Hz
Overload protection
Short circuit protection
Over Temperature protection
Power Saver Protection
100% HI-POT tested
100% cycling burn-in