Input: 100-240 VAC 50/60Hz 5-25W Output: 3kV 30mA Operational environment: -25℃-40℃ A piece of heat shrink pipe will be shipped with the transformer, it can be used outside after you finish the wire connection, it can be used to protect the outside of wire connection. Can be used in any sizes of glass light sign, you can use it in glass sign of 14 inches, 17x14 inches,19x15 inches, 24x20inches, 19x19inches, 18x18 inches etc. It also can be used in glass light sign in US, UK, Canada, Austria etc. Fine workmanship and good performance. Durable in use. Item Type: Lighting Model Number: Power Supply Note: check the transformer size you place the order . Make the glass tubes are in good condition, no breaks, no cracks, etc. Size: . 130*31*20mm Wire length: . 10.5 inches colour:black Material:Plastic + metal Package Contents: 1 * Transformer Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.