Features:NOTE: The batteries and others accessories are not includedCondition:Thank you for purchasing our 12 channel remote firing system. We are sorry we could not include batteries but this is not allowed when by air freight. However, we are sure you will appreciate the value of our product. Your purchase includes three receivers and one transmitter to give you a total or 12 channels.Power:Receiver: 4 AA batteriesTransmitter: 12v 23A batteryRange: 150 meters (492 feet)The receivers are very economical. They can be used independently. If one fails, the others will continue to operate. This system is expandable. Simply purchase more receivers from the website below. The receivers come pre-programed for your convenience however they are reprogrammable. Locate a small hole in the center of the receiver and insert a paperclip or similar object. The receiver will flash then press a corresponding key on the remote. Now the receiver has been paired with the remote.Caution!1. Handle your product with care avoid shaking and dropping it.2. Keep the receiver as far away from your fireworks as possible to avoid damage.3. Remove batteries before storage.4. Store your product in a clean dry area away from containments.Frequency 433MHzThis device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.Attention:1 Please do not shake incept box violently. When no need use it.2. When you connect the product well, do not touch the clip of the in order to not the because of the .3 Please take the cell out when no use products, for prevent defile incept box.4 Please do not place the product in the damp, sour, alkali and pollution environment.5 The remote by the rolling controlled number, with this remote, the receive will not be controlled by other remote in 1 million, but also maybe appear, when connecting the make sure your body far away the exit of the after connecting, far away the and take care yourself.Note:1.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Thank you for your understanding!Package List:3 x receivers1 x transmitter12 x Connecting linesSKU:QGD4268