Professional 12 Channel Wireless Fireworks Firing System Igniters Remote Control Power Source: 6V – requires 4 AA batteries per receiver (batteries not included) Range: Up to 150 meters with antenna on each receiver Fully programmable – assign any receiver to any button on the remote control. To program, insert a small stick into the programming hole on the receiver box; the indicator light will flash, then press the desired button on the remote Expandable – add additional receivers (sold separately) to increase the number of firing cues Interchangeable and economical – replace individual receivers if needed without replacing the entire system; purchase only the receiver unit when necessary Specifications: Material: Plastic Weight: 265g (9.3 oz) Frequency: 433MHz Transmitter Power Source: 12V 23A battery (not included) Receiver Power Source: 4 x AA batteries (not included) Channel Quantity: 8 channels Range: 150 meters (5905.5 inches) Package List: 1 x Remote Controller 2 x Receiver 1 x Set of Connecting Lines Notes: Handle with care; avoid shaking or dropping Keep receivers as far from fireworks as possible to prevent damage Remove batteries before storage to prevent corrosion Do not store or use in damp, acidic, alkaline, or polluted environments Batteries not included with any component Product may vary slightly in design; new or old version shipped randomly