Check the listing for details. DIRECTED ELECTRONICS DEI D.E.I. 508D OWNERS MANUAL INSTRUCTIONS INSTALLATION. Condition: Used. Listed at 2.99 USD. THIS IS A NICE OWNERS MANUAL FOR A DEI 508D SENSOR. ALL SALES ARE FINAL. BE SURE TO CHECK OUT MY OTHER AUCTIONS. I WILL TRY TO COMBINE SHIPPING ON ITEMS ENDING THE SAME DAY. IF YOU NEED TRACKING FOR THIS ITEM THERE WILL BE AN ADDITIONAL FEE. RETURN POLICY If you receive a defective item it may be able to be repaired or replaced and shipped back to you at no charge. No returns accepted on as-is listings. You must contact us within 3 days of receiving defective item. Buyer pays return shipping and ships the item in original packaging. Upon inspection, if we deem the product is not in the same condition as it was received or damaged intentionally, then no refund will be issued. All serial numbers are recorded before an item ships.