Instructions for New 48 Channel Firing System. Thank you for purchasing our 48 channel remote firing system. We are sorry we could not include batteries but this is not allowed when shipping by air freight. However, we are sure you will appreciate the value of our product. Your purchase includes 12 receivers and one transmitter to give you a total or 24 channels. Power: Receiver: 4 AA batteries Transmitter: 6pcs battery Range: 300meters (984 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 433MHz This 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.