1. Professional 12 Channel Wireless Fireworks Firing System Igniters Remote Control -q 2. Features: ① Power Source: 6V - requires 4 AA batteries per receiver. ② Range: 150 meters. Each receiver is equipped with an antenna. ③ Fully programmable - assign any or all receivers to any button on any system remote. To program the receiver, insert a small stick into the hole on the receiver box. Then the light on the receiver box will flash, followed by pre... ④ Expandable - Add other receivers (available individually) to increase the number of cues. ⑤ Interchangeable & Economical: If a receiver has minor issues after a period of use, others can be used instead. Or only the receiver needs to be purchased, no need to buy the remote. 3. Specification: Material: Plastic Weight: 265g/9.3oz Frequency: 433MHz Transmitter Power Source: 12v 23A battery (NOT included) Receiver Power Source: 4*AA batteries (NOT included) Channel Quantity: 8pcs Range: 150m/5905.5inch 4. Package List: 1 *Remote Controller, 2 *Receiver, 1 Set *Connecting Line 5. Note: ① Handle the product with care to avoid shaking and dropping. ② Keep the receiver as far away from fireworks as possible to prevent damage. ③ Remove batteries before storage to prevent contamination of the receiver box. ④ Do not place the product in damp, sour, alkali, or polluted environments. ⑤ All systems do NOT include batteries. ⑥ Note: The new type and old type of this product will be sent randomly, and please ensure you do not mind before ordering.