This RF module is a two-in-one design, containing both CC1101 and NRF24 chips The PCB design is based on the official LoRa module design. A case similar to the official module will be released later for better compatibility with the Cardputer ADV Compact design with easy integration for various projects The NRF24 module implements an NRF24 jammer. (It has low power and works better against 2.4G Wi-Fi; its effect on Bluetooth is weaker. Please consider this before purchasing.)The CC1101 module enables Sub-GHz signal reception and transmission (The product printed words may vary depending on the batch, but this does not affect use) Color: As Shown Material: PCB Package Contents: 2*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.