HC-12 433MHz Long Distance Wireless Communication Module (SI4463)

HC-12 433MHz Wireless Communication Module (SI4463) OverviewThe HC-12 433MHz wireless module, powered by the SI4463 transceiver chip, is a long distance wireless communication module engineered for reliable, low-power data links. Designed for IoT, robotics, smart systems, and remote sensing, this compact transceiver offers long-range UART communication without complex network infrastructure.Key FeaturesFrequency: 433MHz optimized for long-range links and strong anti-interference performanceLong Range: Up to 1 km in open space with clear line of sightLow Power: Efficient power use for battery-operated devicesFlexible Interface: UART (3.3V TTL) for simple serial communication with microcontrollersAdjustable Settings: Baud rate 1200 to 115200 bps and configurable output power up to 100mWWide Voltage Range: Operates from 3.2V to 5.5V, suitable for common development boardsCompact Size: 27.4mm x 13.2mm x 4mm for tight installationsWhy Choose the HC-12 433MHz ModuleThis HC-12 module is ideal for hobbyists and professionals who need dependable wireless links for telemetry, control, and sensor data. The SI4463 chipset ensures stable RF performance and strong resistance to interference, while the UART interface makes integration with Arduino and Raspberry Pi fast and straightforward.Common ApplicationsIoT sensor networks and telemetryRemote weather stations and environmental monitoringSmart irrigation and agricultural automationRobotics communication and remote controlHome and industrial automation alertsSpecificationsFeatureDetailsFrequency433MHzChipsetSI4463RangeUp to 1 KM (open space)InterfaceUART (3.3V TTL)Baud Rate1200 – 115200 bpsOperating Voltage3.2V – 5.5VOutput PowerMax 100mWDimensions27.4mm x 13.2mm x 4mmIntegration and Getting StartedIntegrating the HC-12 into your project is simple. Use a 3.3V UART connection to connect TX/RX lines to your microcontroller, ensure a common ground, and power the module within the 3.2V to 5.5V range. Adjust baud rate and power settings via AT commands to match range and throughput needs.Quick Setup StepsConnect VCC (3.3V–5.5V) and GND.Connect TX of the module to RX of your microcontroller and RX to TX.Set matching baud rates on both devices (1200–115200 bps supported).Use AT commands to configure channel, power, and mode.Test link in open space to verify range and reliability.CompatibilityThe HC-12 module works well with Arduino, ESP8266/ESP32, Raspberry Pi, STM32, and most microcontrollers that support UART serial communication. It is suitable for both prototype development and production deployments that require robust point-to-point RF links.Tips for Best PerformancePlace modules with clear line of sight for maximum range.Use proper antenna placement and grounding to reduce interference.Lower output power to conserve battery when full range is not required.Test different baud rates to find the optimal balance of speed and reliability.Included and Important NotesModule only; antennas or mounting hardware may not be included depending on the listing.Images are for illustration purposes only.SummaryThe HC-12 433MHz wireless transceiver with SI4463 is a powerful, cost-effective solution for long-range, low-power wireless communication. It is tailored for IoT, remote monitoring, robotics, and any project that needs reliable UART-based RF links. Categories: Boards, Modules and Accessories, Wireless Communication Tags: 433 MHz, Data Transmission, HC-12, Long-Range Wireless, Remote Control, UART Interface College Road Electronics4.85 (317 Reviews)