433Mhz HC12 HC-12 SI4463 Wireless Serial Port Module is a multichannel implanted remote handset module with 433.4-473.0HMz working frequency and 100 correspondence channels, and a long transmission distance up to 10m on the outside. Stamp openings edge configuration support SMD introducing simple to implant into the application gadgets. On-board SMA(ANT1) and bind joint(ANT2)two types of receiving wire interfacing port, you can introduce the SMD coaxial radio wire, helical radio wire, or DIY 433MHz radio wire ideal for DIY brief distance remote information transmission framework, for example, a remote sensor, brilliant structure defend framework, mechanization information obtaining, and so on.

Features of HC12 SI4463
- Long-distance wireless transmission up to 1,000m in open space with a baud rate of 5,000bps in the air, is perfect to replace Bluetooth in the short-distance data transmission area
- The 433.4-473.0MHz working frequency with various communication channels up to 100
- Maximum 100mW transmitting power(settable 8 class), 3.2-5.5V low voltage power supply, Three serial passthrough modes, adapting to different application situations
- Compact size with stamp holes edge design supporting SMD installing embedded into the application devices easily
- Ship it out by USPS with tracking information and 7-17 days delivery time usually
Pinout of HC12 SI4463

Pin Name | Pin Description |
VCC | Power Input 3.3-5v DC |
GND | Common Ground |
RXD | Receive Input UART-TTL |
TXD | Transmit Output UART-TTL |
SET | LOW=Enter config mode (AT) |
ANT2 | Spring Antenna/PCB |
GND | Common Ground |
GND | Common Ground |
NC | Not Connected |
ANT1 | IPX External Antenna |
Specifications of HC12 SI4463
Working Voltage: | 3.2-5.5V(If the module works a long time and the power supply voltage is over 4.5V please concatenate a 1N4007 diode) |
Default Communication Distance(approx.): | 600m(Maximum communication distance up to 10m, 5000bps baud rate) |
Idle Current: | 16mA |
Working Frequency: | 433.4-473MHz |
Transmitting Power(max.): | 100mW |
Default Factory Setting: | working mode FU3, baud rate 9600bps, communication channel CH001(433.4M) |
Size: | 27.8 X 14.4 X 4mm |
Datasheet of HC12 SI4463
Download HC12 SI4463 433Mhz Wireless RF Serial Port Module Datasheet from the link given below.