T7715DV Interchangeable Wall Plug Power Supply TT Electronics - IoT Solutions T7715DV Interchangeable Wall Plug Power Supply offers a 90VAC to 264VAC input voltage range, a 3A current rating, and a 47Hz to 63Hz frequency range. The T7715DV features interchangeable AC heads, level VI efficiency, and worldwide approval. TT Electronics - IoT Solutions T7715DV Power Supply comes complete with UK, Euro, USA, and Auz AC heads with all the relevant country approvals and Pi4 compatibility.