PL513/TW523 interface The PL513 (one way interface) and TW523 (two-way interface) are intended for use by developers who want to develop products that transmit and receive X10 protocols. A relatively high level of programming knowledge is required to develop products that use these interfaces. If you are an end user who has purchased this product to work with a product that was designed to use it, please refer to the owner's manual for that product for operating instructions. If you are a developer who has purchased this interface to develop an X10 compatible product, you will need the PL513/TW523 Tech Note which gives you all the information you need to be able to "talk to the interface." Please visit our Web Site at: http://www.x10.com/products/ x10_tw523.htm or ftp://ftp.x10.com/pub/manuals/ technicalnote.pdf to download the Tech Note. We do not include a copy of the Tech Note with every interface we ship, because developers only need one copy and end users do not need it. If you are and end user and have misunderstood what this product is for, and how it is used, we will be happy to refund your purchase price (if you purchased the product directly from X10). If your purchased the product from somewhere else please contact your dealer or distributor. LIMITED 1-YEAR WARRANTY X10.com, a division of X10 Wireless Technology, Inc. (X10) warrants X10 products to be free from defective material and workmanship for a period of one (1) year from the original date of purchase at retail. X10 agrees to repair or replace, at its sole discretion, a defective X10 product if returned to X10 within the warranty period and with proof of purchase. If service is required under this warranty: 1. Call 1-800-675-3044 or visit www.x10.com, or e-mail sales@x10.com to obtain a Return Merchandise Authorization (RMA) number. 2. Return the defective unit postage prepaid to X10 (see address on back). 3. Enclose a check for $4.00 to cover postage and handling. 4. Enclose a dated proof of purchase. 5. X10 is not responsible for shipping damage. Units to be returned should be packed carefully. X10.com, a division of X10 Wireless Technology, Inc. 3824 North 5th St., Suite C, North Las Vegas, NV 89032 Please visit www.x10.com/warranty to complete your on-line warranty registration. Thank you. PL513/TW523-602DR Cut here (1/2 sheet, 8 1/2" x 5") ...