434Mhz Serial RF Module HC-11 (1-40M)
100 units available with a short lead time.
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.
The 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.
Key Features
- 434 MHz FSK Transceiver – Transparent wireless serial data transmission
- UART/TTL Interface – Serial baud rates from 1.2 kbps to 115.2 kbps (default 9.6 kbps)
- Multiple Operating Modes – Three modes with idle currents of 80 µA, 3.5 mA, or 22 mA respectively
- AT Command Configuration – Set baud rate, frequency, power level, data rate, and bandwidth; settings saved to flash
- Adjustable TX Power – −30 dBm to +10 dBm output
- Wide Supply Voltage – 3.3–5V DC, compatible with both 3.3V and 5V microcontrollers
- Compact Form Factor – 27.8 × 14.4 × 4 mm
- Wide Temperature Range – −40°C to +85°C
Specifications
- Frequency: 434 MHz
- Modulation: FSK
- Supply Voltage: 3.3–5V DC
- Communication Distance: 1–40 m (indoor)
- Serial Baud Rate: 1.2–115.2 kbps (default 9.6 kbps)
- Receiving Sensitivity: −112 dBm to −95 dBm
- Transmit Power: −30 dBm to +10 dBm
- Interface: UART/TTL
- Operating Temperature: −40°C to +85°C
- Dimensions: 27.8 × 14.4 × 4 mm
Ideal For
- Short-range indoor wireless serial links
- Arduino and microcontroller wireless communication
- Home automation and sensor networks
- Replacing short wired serial connections
- Low-power wireless monitoring
Package Contents
- 1× HC-11 434 MHz Serial RF Module
The 434Mhz Serial RF Module HC-11 (1-40M) appears in the following collections:
