UPBRIGHT NEW AC/DC Adapter For AT&T ATT 984 Small Business System Speakerphone Power Supply Cord Cable PS Wall Home Charger Input: 100-240 VAC 50/60Hz Worldwide Voltage Use Mains PSU World Wide Input Voltage 100-240VAC 50/60Hz OVP, OCP, SCP Protection (OVP: Over Voltage output Protection. OCP: Over Current output Protection. SCP: Short Circuit output Protection) Tested Units. In Great Working Condition. UpBright 30 days money back guarantee. 1 full year service warranty. UpBright NEW AC / DC Adapter For AT&amp;T ATT 984 Small Business System Speakerphone Power Supply Cord Cable PS Wall Home Charger Input: 100 - 240 VAC 50/60Hz Worldwide Voltage Use Mains PSU