Check the listing for details. 4CH DI/4CH DO/RS485 422 V4.22. Condition: Used. Listed at 19.99 USD. 4CH DI/4CH DO/RS485 422 V4.22. Item specifics Condition: Used : Seller Notes: “" Pulled off from working system."” Model: NCP1200V2LP Photos: Photos is actual item MPN: 4CH DI/4CH DO/RS485 422 V4.22 Manufacturer: Geovision Brand: GeoVision UPC: Does not apply Terms & Conditions : Payment : PAYPAL ONLY: We do not accept any other payment method. shipping : Most orders ship within one business day the payment is cleared (excluding weekends and holidays)We cannot change the shipping address after receipt of the payment.Warrantly: All items are cover by a 30 day warranty.Returns : Returns accepted calculating from the time that the shipping carrier delivered the item,your buyer should contact seller within 14 days .If for any reason you receive an item in a nonworking condition or your item is "Not as Described" Please contact us via eBay messaging and we will work with you resolve all issues.A returned will not be authorized for any item purchased that is not compatible or is no longer needed.Please do not return any items without an authorization number or other instructions by us. Any packages that are send without our knowledge will be refused and no replacements will be issued. Wrong item ordered or non defective part returns require a 20% restocking fee. ALL PRODUCTS ARE MARKED WITH SERIAL NUMBER AND QC BADGE. ANY PRODUCTS RETURNED WITHOUT OUR SERIAL NUMBER AND QC BADGE WILL BE REJECTED AS NOT OUR PARTS.Please do not remove the sticker or you will not be able to return the item.Shipping fee is non-refundable.Feedback : Your feedback is very important to us and is much appreciated .To help us maintain a good standing,so please do not leave a negative feedback without contacting us first,we check our mailbox daily and we will do our very best to resolve any issue in a timely and professional manner!Thank you!For any question or special requests please contact us through eBay messaging.Note: Please look at the picture(s) and check part number to make sure it's compatiple with your systems.