Yealink PS5V1200USThe Yealink PS5V1200US power supply for use with Yealink IP phones. FEATURES AC/DC Switching adapter Output: 5V - 1.2A Input: 100-240V ~ 50/60Hz 250mA COMPATIBLITY SIP-T18G SIP-T20P SIP-T22P SIP-T26P SIP-T28P SIP-T41P SIP-T42G. T40G, T23G, T21, T21P, T21P-E2, T19, T19P, T19P-E2, W52P, W52