PK Power 24V AC/AC Adapter For Sino-American Model: A72418DC A724180C Triad Magnetics WAU24-1800 WAU241800 Class 2 Transformer 24VAC Power Supply Cord Battery Charger (with Coaxial Plug)<b>Service Information: </b><br><br> In terms of use, warranty and other product issues, please first send Email and contact with our customer service center. <br> For your own interests and safety, if there is any abnormal condition when using the product, please stop using it immediately and contact with our customer service center . <br><br> <b>How to contact us? </b><br> You can contact us directly from Your Account. Locate the order and click the "Problem with this order?" button.<br> Then select the "Contact Seller" button to send us an e-mail message. We would be glad to solve any problem for you within 24 hours. <br><br><br> Your support to our business and your patience on the matter will be really appreciated. <b>Warranty:</b><br> 30 Days Money Back Promised<br> 60 Days Free Exchange With Paid Return Label<br> 360 Days Anytime Worry-Free Warranty!<br> Bid With Confidence!!!