Low operating voltage: 1.9~3.6V low voltage operation High speed: 2Mbps, due to the very short air transmission time, collisions in wireless transmission are greatly reduced (software-configurable air transmission rate of 1Mbps or 2Mbps) Multi-frequency: 125 frequency points, meeting the needs of multi-point communication and frequency hopping communication Ultra-compact: Built-in 2.4GHz antenna, small size Low power consumption: When operating in response mode communication, the fast air transmission and startup time greatly reduce current consumption. Due to different batches, there may be differences in product appearance and printed text, which not affect use Color: As Shown Material: PCB Package Contents: 2 * Wireless Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.