YealinkSIPPWR-5V1.2A-DC2.45, 5V 1.2 Amp Replacement Power Supply Unit For WH62 Base Unit, AU Model $18.00 Yealink SIPPER-5V1.2A-DC2.45, 5V 1.2 Amp Replacement Power Supply Unit For WH62 Base Unit, AU Mode. Quantity: Add To Cart Added! Yealink SIPPER-5V1.2A-DC2.45, 5V 1.2 Amp Replacement Power Supply Unit For WH62 Base Unit, AU Mode.