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Specification
Brand : Coliao
BulletPoint1 : HC-12 Power Supply Voltage: 3.2V~5.5V. (If the module is to be in the transmitting state for a long time, it is recommended to connect a 1N4007 diode in series when the power supply voltage exceeds 4.5V to avoid the built-in LDO heating of the module).
BulletPoint2 : Default Communication Distance(open field test): about 600m (the communication distance can be adjusted up to 1000m, the air baud rate is 5000bps).
BulletPoint3 : Default Idle Current: 16 mA (module operating current is different in different operating modes).
BulletPoint4 : Operating Frequency Range(433.4-473.0MHz, up to 100 communication channels), maximum 100mW transmit power (settable).
BulletPoint5 : Default Factory Setting: working mode FU3, baud rate 9600bps, communication channel CH001 (433.4M).
BulletPoint6 :
BulletPoint7 :
Color : black
CompatibleDevices : Desktop
CompatibleDevices1 : Desktop
CompatibleDevices2 : Laptop
CompatibleDevices3 : Headphone
CompatibleDevices4 : Keyboard
CompatibleDevices5 : Game Console
ConnectivityTechnology : Serial, Ethernet
ConnectorType : USB
DataLinkProtocol : Bluetooth
ExternallyAssignedProductIdentifier1 : 687117710413
ExternallyAssignedProductIdentifier2 : 0687117710413
ExternallyAssignedProductIdentifier3 : 00789407028762
FrequencyBandClass : tri_band
HardwareInterface : bluetooth
HardwareInterface1 : usb_c
HardwareInterface2 : bluetooth
IncludedComponents : HC-12 SI4463/SI4438 Wireless Module
IncludedComponents1 : LINK 380 Bluetooth Adapter
IncludedComponents2 : Paper Bag
IncludedComponents3 : Leaflet
ItemDisplayDimensions_Depth : 0.8 inches
ItemDisplayDimensions_Height : 0.2 inches
ItemDisplayDimensions_Width : 0.6 inches
ItemName : 2pcs HC-12 433Mhz SI4463/SI4438 Wireless Serial Port Module 1000M Replace Bluetooth with Antenna
ItemPackageDimensions_Height : 8.3058 centimeters
ItemPackageDimensions_Length : 0.9906 centimeters
ItemPackageDimensions_Width : 5.0038 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : bluetooth-network-adapters
Manufacturer : Coliao
ModelName : HC-12
ModelNumber : 380
ModemType : data_fax_voice
NumberOfItems : 2
NumberOfPorts : 1
PackageLevel : unit
PartNumber : 14208-24
PowerPlugType : no_plug
ProductDescription : 433Mhz HC-12 S14463 SI4438 Wireless Serial Port Module STM8S003F3U6

Power Supply Voltage : 3.2V~5. 5V.(if the modules working long hours in emission state, suggested that when the power supply voltage is greater than 4.5V you need concatenating a 1N4007 diode to avoid module built-in LDO got fever).
Default Communication Distance : about 600 m (communication distance is adjustable up to 1000 m, air baud rate 5000 BPS).
Default Idle Current: 16 mA (modules in different working mode of different current).
Default Working Mode :FU3, baud rate 9600bps, communication channel CHO01(433.4MHz)
Operating Frequency Range (433.4-473.0 MHz, as many as 100 communication channel) maximum 100 mw fired power (can be set)
Module supporting software upgrades.

The HC-12 module has four serial port modes, which are represented by FU1, FU2, FU3 and FU4 under idle state is 3.6mA, 80uA, 1 6mA and 16mA respectively, and the maximum working current is 100mA(under full power emission state).
FU1 mode is a more power-saving mode, the idle working current of the module is about 3.6mA. In this mode, the module can also set the 8 serial port baud rates as shown in the table below, but the air baud rate is unified to 250,000 bps.
FU2 mode is power saving mode, the idle working current of the module is about 80uA. In this mode, the module only supports the serial port baud rate of 1200 bps, 2400 bps and 4800 bps, and the air baud rate is unified to 250,000 bps. (After detection, there is a little bug when transmitting data in this mode, and users are not recommended to use FU2 mode for the time being)
FU3 mode works at full speed and the idle working current is about 16mA.
FU4 mode is ultra-long distance communication mode.

Packing included:
2* 433Mhz HC-12 SI4463/SI4438 Wireless Module Serial Port 1000M
ProductSiteLaunchDate : 2023-06-10T02:58:43.930Z
Size : 0.2" x 0.6" x 0.8"
SpecificUsesForProduct : Headphones
StreetDate : 2025-03-06T00:00:01Z
SupplierDeclaredDgHzRegulation : not_applicable
SupplierDeclaredHasProductIdentifierExemption : 1
TotalEthernetPorts : 2
UnspscCode : 43220000
WarrantyDescription : 2 year Manufacturer