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; programming achieved by inserting a small stick into the programming hole on the receiver box, causing the indicator light to flash - Expandable – add additional receivers (sold separately) to increase the number of firing channels - 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) - Channels: 8 - Range: 150m (5905.5 inches) Package List: - 1 x Remote Controller - 2 x Receivers - 1 x Set of Connecting Lines Notes: - Handle with care; avoid dropping or excessive shaking - Keep receivers as far from fireworks as possible to prevent damage - Remove batteries when not in use to prevent corrosion - Do not store or use in damp, acidic, alkaline, or polluted environments - Batteries are not included with this product - Please note: New and old versions of this product may be shipped randomly; ensure you are comfortable with this before ordering