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AJMRTC HC-12 433MHz SI4438 Wireless Serial Module, UART TTL Transparent Transmission 1000M Long Range RF Module with Spring Antenna, Alternative to Bluetooth for Arduino STM32 MCU Project
- - SI4438 chipset 433MHz RF module, up to 1000 meters open-air transmission range
- - UART TTL serial transparent transmission, easy to pair with Arduino, STM32 and other MCUs
- - Comes with spring antenna, supports AT command configuration for channel, baud rate and transmit power
- - Multiple working modes, supports one-to-one, one-to-many and many-to-many communication
- - 3.2V to 5.5V wide voltage input, low idle current for battery-powered embedded devices
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Overview
Specs
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AJMRTC HC-12 wireless serial module adopts SI4438 RF chip at 433MHz frequency band, offering much longer transmission distance than Bluetooth modules. It uses UART TTL transparent transmission so you can send serial data wirelessly without complex RF programming. You can switch 100 adjustable frequency channels and modify parameters via AT commands, settings will be saved after power-off. It works well for remote sensor data collection, wireless control, smart home and robotics projects. Please note that 1000M range is tested in open space; obstacles and metal shielding will reduce effective distance.
Specifications:
- Brand: AJMRTC
- Model: HC-12
- RF Chip: SI4438
- Frequency: 433.4MHz ~ 473.0MHz
- Interface: UART TTL (3.3V / 5V compatible)
- Max Open Range: 1000M
- Power Supply: DC 3.2V ~ 5.5V
- Antenna: Spring Coil Antenna Included
- Configuration: AT Command
- Baud Rate: 1200bps ~ 115200bps adjustable
- Transmit Power: Max 20dBm
- Application: Arduino, STM32, wireless sensor, remote control, IoT project
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: non-replaceable
- This item is covered by ConnectFlow USA Return Policy
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