Features: Enhances your wireless communication capabilities with the HC 12 SI4438/4463 SI4463 module, providing reliable data transmission for your projects. This module features adjustable frequency and low power consumption, ensuring efficient and stable wireless connections. Designed for electronic enthusiasts, engineers, and manufacturers, this module caters to individuals and businesses in need of wireless communication option. Whether you are working on remote control system or home automation projects, this module can be easily integrated into various applications. Unlock the potential of wireless communication with the HC 12 SI4438/4463 SI4463 module, offering reliable and efficient data transmission for a wide ranges of applications. Specifications: Material:PCB Type:SI4438,SI4463 Operating frequency band: 433.4~473.0MHz Working voltage: 3.2~5.5V Communication Interfaces: UART3.3V5VTTL level Antenna Interfaces: spring antenna/antenna socket Transmission power: 20dBm (maximums) Reference distance: 1000m Package Includes: 1x Wireless Module note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.