1. Long-range wireless transmission with an air-to-air baud rate of 500 bps and a communication range of up to 1,000 meters in open areas
2. Operating frequency range of 433.4–483.8 MHz, with up to 254 communication channels
3. Maximum transmission power of 100 mW (20 dBm) (8 power levels available)
4. Four operating modes to suit various application scenarios
5. Built-in MCU for communication with external devices via serial port
The HC-12 wireless serial communication module is a new-generation, multi-channel embedded wireless data transmission module. It operates in the 433.4–483.8 MHz frequency band, supports multiple channels with a 400 kHz step size, and offers a total of 127 channels. In default mode, the module has a
maximum transmit power of 100 mW (20 dBm), an air data rate of 5000 bps, a receive sensitivity of -116 dBm, and a communication range of 1000
meters in open terrain.
The module uses a through-hole package and supports surface-mount soldering. With dimensions of 27.4 mm × 13.2 mm (excluding the spring antenna), it is easy for customers to integrate into application systems. The module features a PCB antenna socket (ANT1) that allows users to connect an external antenna via coaxial cable to the 433 MHz band (compatible with 433.4 MHz–450 MHz) or the 470 MHz band (compatible with 450 MHz–483.8 MHz), depending on the selected communication channel. The module also includes an antenna solder pad (ANT2)
for users to solder a spring antenna. Users can select one of these antenna options based on their application requirements.
The module contains an MCU, eliminating the need for additional programming. Various pass-through modes simply transmit and receive serial data, making it easy to use. The module supports multiple serial pass-through modes, which users can select using AT commands according to their application requirements.
The average operating currents in idle mode for the four modes (FU1, FU2, FU3, and FU4) are 3.3mA, 85μA, 16.5mA,
and 16.5mA, respectively, with a maximum operating current of approximately 120mA (during full-power transmission).
Model: HC-12 SMD Version V4.0
Communication Interface: UART 3.3V–5V TTL Level
Communication Level: 3.3V/5V Level
Operating Humidity: 10%–90%
RF Chip Solution: SI4438, with external 433MHz antenna
Transmission Rate: 4–5 KB/s
Communication Range: 1 km (FU4), half-duplex, 1200–115,200 bps
Operating Voltage: 3.0–5.5 V
Communication Interface/Level: UART 3.3/5 V TTL level
Operating Frequency Band: 433.4–484.0 MHz, 254 channels total
Transmit Power (MAX): 100 mW (20dBm)
Idle current in four modes: FU1: 3.3mA, FU2: 85μA, FU3: 16.5mA, FU4: 16.5mA,
Operating current (MAX): 100mA (full power)
Operating temperature: -40~+85°C
Reference distance: 1000m
Module dimensions: 27.4×13.2
Built-in firmware, auto-pairing upon power-up. Note: At least two modules are required for interconnection.
Wireless sensors
Residential and commercial building security
Wireless robot control
Industrial remote control and telemetry
Automated data acquisition
Container information management
POS systems
Wireless data collection for gas meters
Keyless entry systems for vehicles
Wireless PC networking
1x Module
1x Spring antenna
1. Customer satisfaction is our top goal. We believe our items are so outstanding. All products are quality checked. They are new and in good condition when shipped to our customers. We are convinced you will be happy with your Purchase.
2. If product is defective or damage upon arrival, or wrong product shipped, please contact us immediately. Returns accepted within 14 days of delivery date and item must be in original new condition, not worn or altered in any way with attached tags & wrap. Otherwise deal is final. Return shipping must be paid by buyer.
3. Please contact us first if you have any problems/questions/concerns. We will be happy to resolve any issues you may have in a cordial and friendly manner.
4. We appreciate your Postive Feedback, and will do the same in return. DO NOT leave negative feedback without first communication with us. Ple
1. Customer satisfaction is our top goal. We believe our items are so outstanding. All products are quality checked. They are new and in good condition when shipped to our customers. We are convinced you will be happy with your Purchase.
2. If product is defective or damage upon arrival, or wrong product shipped, please contact us immediately. Returns accepted within 14 days of delivery date and item must be in original new condition, not worn or altered in any way with attached tags & wrap. Otherwise deal is final. Return shipping must be paid by buyer.
3. Please contact us first if you have any problems/questions/concerns. We will be happy to resolve any issues you may have in a cordial and friendly manner.
4. We appreciate your Postive Feedback, and will do the same in return. DO NOT leave negative feedback without first communication
When you satisfied with our product and services please leave us positive feedback.
If a problem occurs, contact us immediately with any email request. Just contact us using the " Ask the seller a question" link on eBay.We will maill bakc within 24hours