{"title":"433Mhz Serial RF Module HC-12 (1000M)","handle":"433mhz-serial-rf-module-hc-12-1000m","url":"/products/433mhz-serial-rf-module-hc-12-1000m","description":"The HC-12 is a multi-channel embedded wireless serial port module operating in the 433.4–473.0 MHz band. With up to 100 mW (20 dBm) transmit power and −117 dBm receiving sensitivity, it achieves communication distances of up to 1,000 metres in open space at 5,000 bps air baud rate.\n\nA built-in MCU handles all RF protocol processing, allowing transparent serial data transmission — simply send data to the module's UART and it appears at the other end. Configuration is done via AT commands, with three operating modes (FU1, FU2, FU3) offering different power/speed trade-offs. A minimum of two modules is required for communication.\n\nKey Features\n\n\n1,000 m Range – Open-space communication at 5,000 bps air baud rate\n\n100 Channels – 433.4–473.0 MHz with 400 kHz channel spacing\n\nTransparent Serial Transmission – Built-in MCU handles RF protocol; no external programming required\n\nUART/TTL Interface – Serial baud rates from 1.2 kbps to 115.2 kbps (default 9.6 kbps)\n\nAdjustable TX Power – 8 power levels from −1 dBm to +20 dBm (100 mW max)\n\nThree Operating Modes – FU1 (80 µA idle), FU2 (3.6 mA idle), FU3 (16 mA idle) for power/performance trade-offs\n\nWide Supply Voltage – 3.2–5.5V DC, compatible with both 3.3V and 5V microcontrollers\n\nAT Command Configuration – Set channel, baud rate, power level, and operating mode\n\nNo Packet Size Limit – Unlimited bytes per transmission\n\nWide Temperature Range – −40°C to +85°C\n\n\nSpecifications\n\n\nFrequency Range: 433.4–473.0 MHz (100 channels)\n\nSupply Voltage: 3.2–5.5V DC\n\nCommunication Distance: Up to 1,000 m (open space)\n\nSerial Baud Rate: 1.2–115.2 kbps (default 9.6 kbps)\n\nReceiving Sensitivity: −117 dBm to −100 dBm\n\nTransmit Power: −1 dBm to +20 dBm (8 levels)\n\nMax TX Current: 100 mA\n\nInterface: UART/TTL\n\nOperating Temperature: −40°C to +85°C\n\nDimensions: 27.8 × 14.4 × 4 mm\n\n\nIdeal For\n\nLong-range wireless sensor networks\nRemote data logging and telemetry\nArduino and microcontroller wireless serial links\nHome automation and IoT gateways\nReplacing wired serial connections over distance\n\n\nPackage Contents\n\n1× HC-12 433 MHz Serial RF Module\n\n\n\nNote: A minimum of two HC-12 modules is required for communication. An antenna must be soldered to the module for proper operation. The HC-12 is not compatible with the HC-11 module.\n","vendor":"Elecrow","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":3675,"title":"Default Title","sku":"EC-WHC0012RF","price":16.33,"compare_at_price":0.0,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}