HC-12 RF Module Products

Description

The HC-12 module is a half-duplex RFRadio Frequency transceiver designed to work in the 433MHz ISMIndustrial, Scientific, and Medical radio bands band with up to 100 communication channels that have 400kHz separation, a range up to 1.8km in open air, and a UARTUniversal Asynchronous Receiver-Transmitter interface. The HC-12 module is based on the Silicon Labs Si4463 RF chip and a STMicroelectronics STM8S003F3 8-bit microcontroller. The board usually comes with a 433MHz spring antenna to solder onto the ANT2 pin through hole or you can attach an external 433MHz antenna (not included) to the uFL/IPEX socket on the board.

This module comes pre-programmed so the user can communicate with it and change the configuration settings using ATShort text string commands where the AT stands for ATtention and every command line starts with "AT" or "at". commands. There are four different modes of operation:

FU1: moderate power savings mode
FU2: extreme power savings mode
FU3: general purpose mode (default)
FU4: long-range mode.

Configuration setting parameters are stored on the board in non-volatile flash memory, so it will not be lost when power is removed. The power supply voltage ranges from 3.2V to 5.5V DC, with a power consumption of up to 100mA transmitting and a default idle current of 16mA.

Specs

HC-12 RF Module Specs
Parameter	Description
Module Info	HC-12 433MHz RF Transceiver Module (Datasheet PDF)
Transceiver IC	Silicon Labs Si4463/Si4438
MCUMicrocontroller Unit	STMicroelectronics STM8S003F3 8-bit MCUMicrocontroller Unit
Memory	Configuration setting parameters are stored in onboard non-volatile flash memory, so it will not be lost when power is removed.
Range	1.0km (in FU3 mode at 4800bps serial speed in open space) 1.8km (in FU4 mode at reduced baud rate and volume data)
Frequency	433.4MHz to 473.0MHz
Modulation	GFSKGaussian Frequency-Shift Keying modulation
Air Data Rate (bpsbits per second)	5kbps to 236kbps
Receiving Sensitivity (dBmDecibel-milliwatts (dBm) is a power level that expresses decibels in terms of milliwatts on a logarithmic scale.)	-100dBm to -117dBm (at baud rate of 5kbps in open air)
Transmitting Power (dBmDecibel-milliwatts (dBm) is a power level that expresses decibels in terms of milliwatts on a logarithmic scale.)	Configurable: -1dBm (0.8 mW) to 20dBm (100 mW) Default: 20dBm (100 mW)
Antenna	433MHz spring antenna pin Optional IPEX20279-001E-03 socket
I/O Data Interface	Pin Through Holes with 2.54mm (0.1in) spacing (RXReceive, TXTransmit) UARTUniversal Asynchronous Receiver-Transmitter/TTLTransistor-Transistor Logic Half-Duplex, 8 data bits, no parity, 1 stop bit SET pin for configuration
Operating Supply Voltage	3.2V to 5.5V DC (minimum 200mA)
Transmitting Current	200mA (peak max), 100mA (continuous max)
Idle Current	Idle current depends on mode: 3.6mA in FU1 mode 80μA in FU2 mode 16mA in FU3 mode 16mA in FU4 mode
Operating Temperature	-40°C to +85°C
Pin Spacing	2.54mm (0.1in)
Board Size (LxWxH)	27.8mm x 14.4mm x 4mm (1.1in x 0.57in x 0.16in) (including antenna cap, excluding spring antenna)

HC-12 Modules

HiLetgo HC-12 433Mhz SI4463/SI4438 Module with Spring Antenna

Seller: HiLetgo

Package includes:

1x HC-12 Module
1x Spring Antenna

+ About this item:

Frequency Range: 433.4 MHz - 473.0 MHz, 100 channels with 400kHz step size
Serial Transmission Mode: Half-Duplex
Transmission Power: -1 dBm (0.8 mW) to 20 dBm (100 mW) configurable to 8 different settings
Receiving Sensitivity: -117 dBm (at baud rate of 5000 bps in open air) to -100 dBm
Range: 1 km (in FU3 mode at 4800bps serial speed in open space), 1.8 km (in FU4 mode at reduced baud rate and volume data)
Transceiver IC: Silicon Labs SI4463/SI4438
MCU: STMicroelectronics STM8S003F3 8-bit MCU
Interface: UART 8 data bits with configurable baud rate from 1200 bps to 115,200 bps (default 9600 bps).
Power Supply: 3.2V to 5.5V DC, 100 mA max (in the transmitting state)
Antenna: 433 MHz frequency band spring antenna pin with optional IPEX20279-001E-03 socket
Module Size: 27.8mm x 14.4mm x 4mm

Price: $9.49(Updated UTC)

Amazon.com ()

EC Buying HC-12 433Mhz SI4463/SI4438 Module with Spring Antenna

Seller: EC Buying

Package includes:

1x HC-12 Module
1x Spring Antenna

+ About this item:

Frequency Range: 433.4 MHz - 473.0 MHz, 100 channels with 400kHz step size
Serial Transmission Mode: Half-Duplex
Transmission Power: -1 dBm (0.8 mW) to 20 dBm (100 mW) configurable to 8 different settings
Receiving Sensitivity: -117 dBm (at baud rate of 5000 bps in open air) to -100 dBm
Range: 1 km (in FU3 mode at 4800bps serial speed in open space), 1.8 km (in FU4 mode at reduced baud rate and volume data)
Transceiver IC: Silicon Labs SI4463/SI4438
MCU: STMicroelectronics STM8S003F3 8-bit MCU
Interface: UART 8 data bits with configurable baud rate from 1200 bps to 115,200 bps (default 9600 bps).
Power Supply: 3.2V to 5.5V DC, 100 mA max (in the transmitting state)
Antenna: 433 MHz frequency band spring antenna pin with optional IPEX20279-001E-03 socket
Module Size: 27.8mm x 14.4mm x 4mm

Price: $8.99(Updated UTC)

Amazon.com ()

HC-12 Accessories

433MHz Antennas

The HC-12 module usually comes with a spring antenna that you can solder on the board, but the board also has an uFL/IPEX connector to attach an 433MHz external antenna for increased range or to modify the position of the antenna.

433MHz Antennas