Brand new projector remote control, no programming, paring or setting is needed. Just put in new batteries (NOT Included), it will work reliably. Compatible projector models: Optoma KHZ433UST Optoma ZH400UST Optoma ZH500UST Optoma ZU500UST Optoma ZW300UST Optoma ZW300USTe Optoma ZW300USTi Optoma ZW310ST Optoma ZW400UST Optoma ZW400USTi Features Fully functioning, brand new and durable replacement remote control, works out of packaging. Well responsive to every key press, with backlight, ensuring the projector operates as expected without any hassles. Requires 2 AAA batteries (NOT Included); A perfect replacement to your old or lost remote control; less cost with solid quality and better usage experience. Warranty as long as 12 months (From Date of Purchase); professional and nice customer service: messages will be replied by well-trained support team within 24 hours. Notice: Make sure there's no obstacle between the remote control and projector when operating the device. Warranty: Refund available within 30 days, replacement available within 12 months from order date. Terms of Purchase 1. Payment method Payments will be processed through PayPal. You can also use credit cards accepted by PayPal. Immediate payment is needed for any transactions. 2. Shipping Delivery Orders will be shipped out within 1 - 3 business days accordingly providing with a tracking number. The estimated delivery time and service carriers are listed as below: Australia Standard: 7-15 Days, Expedited: 3-7 Days; Canada Standard: 7-19 Days, Expedited: 3-7 Days; European Countries Standard: 7-19 Days, Expedited: 3-7 Days; United States Standard: 7-15 Days, Expedited: 3-5 Days; Rest of the World Economy: 11-35 Days Expedited: 3-7 Days 3. Return policies We accept returns or exchanges for unused or unopened items within 30 days of purchase date. Your return or exchange request will be fulfilled accordingly as following situations. (1) Damaged or defective items upon delivery: Return for refund or exchange, all extra shipping fees on us. (2) Wrong item received: Return for refund or exchange, all extra shipping fees on us. (3) Items you don't like or need: Return for refund, original and return shipping fees on buyer, 10% restocking fee of item's price will be charged. Please contact us via message as soon as possible if something wrong with your order(s). You may need to take pictures or videos of damaged or defective items if necessary. 4. Feedback We expect you're fully satisfied and happy with every purchase with us. If you really are, please leave us a 5-star feedback for every transaction. Feel free to let us know when something isn't going very well on your order. We'll take on our responsibility and make the best effort to resolve the issue. Also we appreciate your patience and understanding on dealing with a problem of a transaction. Thank you.