Professional 12 Channel Wireless Fireworks Firing System Igniters Remote Control Power Source: 6V - requires only 4 AA batteries per receiver Range: 150 meters. Each receiver includes an antenna Fully programmable – assign any receiver to any button on the system remote. To program the receiver, insert a small stick into the hole on the receiver box. The light on the receiver will flash, then press the desired button on the remote Expandable – add additional receivers (sold separately) to increase the number of firing cues Interchangeable & Economical: If one receiver malfunctions after extended use, it can be replaced individually. Purchase only the receiver unit without needing to buy a new remote Specifications: Material: Plastic Weight: 265g / 9.3oz Frequency: 433MHz Transmitter Power Source: 12V 23A battery (NOT included) Receiver Power Source: 4 x AA batteries (NOT included) Channel Quantity: 8 Range: 150m / 5905.5 inches Package List: 1 x Remote Controller 2 x Receiver 1 Set x Connecting Line Notes: Handle the product with care; avoid shaking or dropping Keep the receiver as far away from fireworks as possible to prevent damage Remove batteries before storage to avoid corrosion Do not store in damp, acidic, alkaline, or polluted environments Batteries are NOT included with any components The new or old version of this product may be shipped at random; please confirm acceptance before ordering