The CC1101 SubGhz 433Mhz module is -built for Zero devices and integrates seamlessly into your existing setup. Its user-friendly interface simplifies the setup process and is easy to use even for those new to security technology. Excellent transmission range, coverage Featuring for Zero compatibility for quick and easy installation The external SubGhz module increases the transmitting and receiving range at 433Mhz, and the high-gain antenna can be replaced by yourself. Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Colour:Green Material:PCB Package Contents: 1 * 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.