{"title":"434Mhz Serial RF Module HC-11 (1-40M)","handle":"434mhz-serial-rf-module-hc-11-1-40m","url":"/products/434mhz-serial-rf-module-hc-11-1-40m","description":"The HC-11 is a low-cost, high-performance FSK transceiver module operating at 434 MHz, designed for transparent wireless serial communication. With a UART/TTL interface, it handles all RF protocol processing internally — simply send serial data in and it appears wirelessly at the receiving module.\n\nThe module offers multiple operating modes with configurable baud rate, frequency, output power, and data rate via AT commands. With indoor ranges of 1–40 metres, it is well suited for short-range wireless data links within a room or enclosure. A minimum of two modules is required for communication.\n\nKey Features\n\n\n434 MHz FSK Transceiver – Transparent wireless serial data transmission\n\nUART/TTL Interface – Serial baud rates from 1.2 kbps to 115.2 kbps (default 9.6 kbps)\n\nMultiple Operating Modes – Three modes with idle currents of 80 µA, 3.5 mA, or 22 mA respectively\n\nAT Command Configuration – Set baud rate, frequency, power level, data rate, and bandwidth; settings saved to flash\n\nAdjustable TX Power – −30 dBm to +10 dBm output\n\nWide Supply Voltage – 3.3–5V DC, compatible with both 3.3V and 5V microcontrollers\n\nCompact Form Factor – 27.8 × 14.4 × 4 mm\n\nWide Temperature Range – −40°C to +85°C\n\n\nSpecifications\n\n\nFrequency: 434 MHz\n\nModulation: FSK\n\nSupply Voltage: 3.3–5V DC\n\nCommunication Distance: 1–40 m (indoor)\n\nSerial Baud Rate: 1.2–115.2 kbps (default 9.6 kbps)\n\nReceiving Sensitivity: −112 dBm to −95 dBm\n\nTransmit Power: −30 dBm to +10 dBm\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\nShort-range indoor wireless serial links\nArduino and microcontroller wireless communication\nHome automation and sensor networks\nReplacing short wired serial connections\nLow-power wireless monitoring\n\n\nPackage Contents\n\n1× HC-11 434 MHz Serial RF Module\n\n\n\nNote: A minimum of two HC-11 modules is required for communication. The HC-11 is not compatible with the HC-12 module. If you need longer range (up to 1,000 m), consider the HC-12 instead.\n","vendor":"Elecrow","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":3541,"title":"Default Title","sku":"EC-WHC0011RF","price":18.29,"on_sale":false,"in_stock":true,"available_quantity":100,"option1":"Default Title"}]}