The CC1101 Wireless Module is a compact, low-power Sub-1GHz RF transceiver built around the Texas Instruments CC1101 chip, designed for wireless data transmission in the 433MHz ISM band. It is an ideal solution for IoT projects, wireless sensor networks, remote control systems, and any application requiring reliable, long-range communication at low power consumption.
At the heart of the module is the CC1101, a highly integrated, low-cost RF transceiver designed for low-power wireless applications. The chip operates in the 300–348 MHz, 387–464 MHz, and 779–928 MHz frequency bands, with this module configured for 433MHz operation. It supports multiple modulation formats including 2-FSK, 4-FSK, GFSK, MSK, OOK, and ASK, giving developers flexibility to balance data rate, range, and power consumption.
The module delivers programmable data rates from 1.2 to 500 kbps, with programmable output power up to +10 dBm. The receiver sensitivity reaches -116 dBm at 1.2 kbps, enabling reliable long-range communication. The module also features built-in hardware CRC, forward error correction (FEC) , and data whitening for robust data integrity.
Power efficiency is a key strength. The CC1101 has low current consumption in both transmit and receive modes, and supports multiple low-power modes including sleep and wake-on-radio. This makes it well-suited for battery-powered sensor nodes and energy-harvesting applications.
The module communicates with microcontrollers via a 4-wire SPI interface (SI, SO, SCLK, CSn), making it compatible with Arduino, ESP32, STM32, and other popular platforms. Additional pins include GDO0, GDO1, and GDO2 for interrupt and status signaling.
The module operates from 1.8V to 3.6V and is available in a compact SMD package. It is widely used in wireless sensor networks, home automation, industrial monitoring, remote keyless entry, and automatic meter reading systems.
Whether you are building a wireless sensor node, a remote control system, or an IoT gateway, the CC1101 provides a proven, reliable foundation for Sub-1GHz communication. It is suitable for individual makers, students, and businesses purchasing in bulk for product development or educational programs.
Features
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Texas Instruments CC1101 chip — Highly integrated, low-power Sub-1GHz RF transceiver
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433MHz ISM band — Operates in the 387–464 MHz frequency range
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Multiple modulation formats — 2-FSK, 4-FSK, GFSK, MSK, OOK, and ASK
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Programmable data rate — 1.2 to 500 kbps
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Programmable output power — Up to +10 dBm
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High sensitivity — -116 dBm at 1.2 kbps
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Low power consumption — Multiple low-power modes for battery-powered applications
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4-wire SPI interface — Easy connection to Arduino, ESP32, STM32, and other MCUs
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Built-in hardware CRC and FEC — Robust data integrity
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Compact SMD package — Suitable for space-constrained designs
Technical Specifications
Usage
Getting Started
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Power the module — Supply 3.3V to the VCC pin and GND to ground. Important: The CC1101 is not 5V tolerant. Use a 3.3V regulator and level shifters if interfacing with 5V devices.
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Connect the SPI interface — Wire the module’s SPI pins (SI, SO, SCLK, CSn) to your microcontroller’s SPI bus. Connect GDO0 to a digital pin for interrupt handling.
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Install the library — Install the ELECHOUSE_CC1101 library or the RadioLib library through the Arduino Library Manager.
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Configure the module — Set the frequency, modulation, data rate, and output power in your sketch. Example: ELECHOUSE_cc1101.setMHZ(433.0), ELECHOUSE_cc1101.SetTx().
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Test communication — Upload a basic transmit/receive sketch to verify operation. Ensure both modules use identical frequency, modulation, data rate, and sync word settings.
Antenna Considerations
The module requires a 50Ω impedance antenna matched to the 433MHz frequency. A quarter-wave antenna is approximately 17cm long. Antenna placement significantly affects performance — keep it away from metal objects and orient it vertically for best results.
Typical Applications
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Wireless sensor networks — Remote monitoring and data collection
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Home automation — Wireless control of lighting, appliances, and HVAC
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Industrial monitoring — Equipment status and process data transmission
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Remote keyless entry — Automotive and access control systems
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Automatic meter reading — Water, gas, and electricity meter data collection
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IoT gateways — Sub-1GHz communication for connected devices
Notes for Business Buyers
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Proven technology — CC1101 is a widely adopted RF transceiver with extensive documentation and community support.
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Regulatory compliance — 433MHz ISM band is available in most regions. Verify local regulations for your deployment area.
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Low power design — Suitable for battery-powered sensor nodes requiring multi-year operation.
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Suitable for bulk purchasing — Ideal for IoT product development, industrial monitoring, and sensor network deployments.
Q: What is the CC1101 module used for?
It is a Sub-1GHz RF transceiver for wireless data transmission in IoT projects, sensor networks, remote control systems, and industrial monitoring applications.
Q: What frequency does this module operate on?
This module is configured for the 433MHz ISM band (387–464 MHz). The CC1101 chip also supports 300–348 MHz and 779–928 MHz bands.
Q: What modulation formats are supported?
The module supports 2-FSK, 4-FSK, GFSK, MSK, OOK, and ASK modulation formats.
Q: What is the maximum data rate?
The module supports programmable data rates from 1.2 to 500 kbps.
Q: What is the output power and receiver sensitivity?
Output power is programmable up to +10 dBm. Receiver sensitivity is -116 dBm at 1.2 kbps.
Q: Is the CC1101 5V tolerant?
No. The module operates from 1.8V to 3.6V and is not 5V tolerant. Use a 3.3V regulator and level shifters if interfacing with 5V devices.
Q: What antenna should I use?
Use a 50Ω impedance antenna matched to 433MHz. A quarter-wave antenna is approximately 17cm long.
Q: What development environments are supported?
The module is compatible with Arduino (using ELECHOUSE_CC1101 or RadioLib), STM32, and other platforms with SPI support.
Q: What is the communication range?
Range depends on antenna quality, output power, data rate, and environmental conditions. In open areas with a good antenna, ranges of 100–500 meters are achievable.
Q: Can I purchase in bulk for a product development project?
Yes. The CC1101 module is suitable for both individual users and business purchasing, including IoT product development, industrial monitoring, and sensor network deployments.
