Professional 12 Channel Wireless Fireworks Firing System with Igniters and Remote Control Power Source: 6V – each receiver requires 4 AA 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, indicating ready for setup 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 replacement receiver 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 Receivers 1 x Set of Connecting Lines Notes: Handle with care to avoid impact or dropping Keep receivers as far from fireworks as possible to prevent damage Remove batteries when not in use to avoid corrosion Do not store or use in damp, acidic, alkaline, or polluted environments Batteries are not included with any component Product may vary slightly in design; new and old versions may be shipped randomly