Viltrox JY-02 studio flash trigger is designed for controlling camera to trigger studio strobe synchronously. <br><br><strong>Features:</strong> <br>JY-02 studio flash trigger is for controlling camera to trigger studio strobe synchronously. <br>It composed by one transmitter and one receiver， are easily installed on any type of light or camera. <br>It is especially designed for photography studios. <br>There are 16 channels with high resistance. <br>The workable distance is about 20 to 30m. <br>This product adopts unique multi-channel isolation technology， which allows different channel triggers work independently in effective distance range，not interfere with each other. <br><br><strong>Specifications:</strong> <br>Power: 23AE 12V(Transmitter);2 * AAA 1.5V (Receiver)(NOT included) <br>Sync Cord diameter: 6.35mm/3.5mm <br>Outdoor operation distance: Approx.20-30m <br>Indoor operation distance: Approx. 20m <br>Sync speed: 1/250s <br>Channel: 16 <br>Package size: 12 * 8 * 4cm / 4.7 * 3.1 * 1.6in <br>Package weight: 130g / 4.6oz <br><br><strong>Note:</strong> <br>The battery and strobe flash are not included. <br><br><strong>Package List:</strong> <br>1 * Transmitter <br>1 * Receiver <br>1 * Sync Cord <br>1 * Adapter(6.35mm to 3.5mm) <br>1 * User Manual(English)