Professional 12 Key Wireless Fireworks Launching System Detonators Remote Control . 12 KEY FIREWORK FIRING SYSTEM Characteristic: 1. Power source: 6 V – requires only 4 AA batteries per receiver. 2. Range: 150 meters. Every receiver with an antenna. 3. Fully programmable – match any or all do any button on any system remote control. If you want to program the receiver, insert a small stick into the hole in the receiver box. Then the light on the receiver will flash – press the appropriate key on the remote control. Then the receiver will work with the remote. 4. Expandable – Add other receivers (available individually) to increase the amount of memory. 5. Interchangeable and economical: If after some time of use one ma a small problem, you can use another instead. Or you just have to buy a receiver, you don't have to buy a remote. . 12 KEY FIREWORK FIRING SYSTEM Specification: Material: plastic Weight: 265 g or 9,3 oz Frequency: 433 MHz Transmitter power source: 12V 23A battery (NOT included) Receiver power source: 4 x AA batteries (NOT included) Number of keys: 12pcs Range: 150 m or 5905,5 inch . 12 KEY FIREWORK FIRING SYSTEM List of packages: 1 x pilot 1 x Receiver 1 set x connecting cable . 12 KEY FIREWORK FIRING SYSTEM