Power Source: 6V requires 4 AA batteries per receiver (batteries not included). Range: Up to 150 meters with antenna on each receiver. Fully programmable system allows any or all receivers to be programmed to any button on any system remote. To program the receiver, insert a small stick into the programming hole on the receiver box until the indicator light flashes, then press the desired button on the remote. Expandable design allows additional receivers (sold separately) to be added for increased cue capacity. Interchangeable and economical: If one receiver becomes damaged after extended use, it can be replaced individually without replacing the entire system. Only the receiver needs to be purchased, not the remote. 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 Connecting Line Notes: 1. Handle the product with care and avoid dropping or excessive shaking. 2. Keep the receiver away from fireworks or high-impact environments to prevent damage. 3. Remove batteries when not in use to prevent corrosion. 4. Do not store or operate the product in damp, acidic, alkaline, or polluted environments. 5. Batteries are not included with any component of this system. 6. Please note that either the newer or older version of this product may be shipped at random. Ensure you are comfortable with this before placing your order.