Neewer Wireless Studio Flash Trigger Rt-16 Featuring Three Receivers And Sixteen Features: *This wireless trigger is control discreteness for camera to trigger hot shoe flashgun synchronously *Easy installation, low power consumption *No any damage to camera *High-speed and synchronous for 1/200 second *Max. working distance: 30M (open area, without interference) *16 channels to avoid interference *The receiver has an on/off switch, and an LED to indicate triggering. *New design: Channel Selector outside the transmitter and the receiver Specifications: Wireless Flash Trigger;16 channels selectable Input of Transmitter: 23A 12V battery (included) Power Input of Receiver: 2 AAA batteries Long lifetime of trigger battery, one year or over 20,000 continuously triggers Plug size of receiver: 3.5mm Adapter size for receiver plug: 3.5mm -- 6.35mm PC sync cable included Radio working frequency: 433MHz How to use: Make sure the channel selector of both transmitter and receiver at same positionInsert the receiver's trigger output plug into your flash's jackPress the test button on your transmitter. The studio light should now flashInsert the transmitter's hot shoe socket into your camera's hot shoe jack (if your camera does not have a hot shoe use a PC sync cord and insert into the socket)You should now be ready to start shooting (you can use the 3.5mm sync cable for cameras without hot shoe or hot shoe is engaged). Condition Warranty: This item is 100% New! Never used.1 Year Warranty by Seller. Package Contents 1x Trigger 3x Receivers Product Features Wireless STUDIO Flash TRIGGER RT-16 with 3 RECEIVERS 16-Channel Works with ANY Strobe Flash! Max. working distance: 30M (open area, without interference) 16 channels to avoid interference sync speed for 1/200 second Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!