Features: 1. Power Source: 6V requires only 4 AA batteries per receiver. 2. Range: 150 meters. Each receiver includes an antenna. 3. Fully programmable pair 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. The indicator light will flash; then press the corresponding key on the remote. The receiver will sync with the remote. 4. Expandable add additional receivers (sold separately) to increase the number of cues. 5. Interchangeable & Economical: If a receiver malfunctions after extended use, replace it individually. Only the receiver needs to be purchased no need to buy a new remote. Specifications: Power Source: 6V requires only 4 AA batteries per receiver. Range: 150 meters. Each receiver includes an antenna. Fully programmable pair 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. The indicator light will flash; then press the corresponding key on the remote. The receiver will sync with the remote. Expandable add additional receivers (sold separately) to increase the number of cues. Interchangeable & Economical: If a receiver malfunctions after extended use, replace it individually. Only the receiver needs to be purchased no need to buy a new remote. 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) Keys Quantity: 12 pcs Range: 150m / 5905.5 inches Package List: 1 x Remote Controller 1 x Receiver 1 Set x Connecting Line Note: 1. Handle the product with care; avoid shaking or dropping. 2. Keep the receiver away from fireworks to prevent damage. 3. Remove batteries before storage to prevent corrosion. 4. Do not place the product in damp, acidic, alkaline, or polluted environments. 5. Batteries are NOT included with any components.