GC433 Series LoRa Temperature Measurement Modules
GC433-TX043 (Passive) and GC433-TX045 (Active) are two LoRa wireless temperature measurement modules developed for power temperature monitoring scenarios. Differentiated primarily by their power supply modes, both are based on LoRa spread spectrum modulation technology, adopt the 410~450MHz frequency band and a maximum transmission power of 22dBm to achieve long-distance, anti-interference wireless data transmission. They form a complementary solution featuring maintenance-free operation of the passive type and flexible deployment of the active type, suitable for long-distance temperature measurement needs in power and various industrial scenarios.
I. GC433-TX043 Passive Sensor Module LoRa Solution
Core Positioning
A power-dedicated passive LoRa temperature measurement module integrating RF and CT power harvesting circuits. It realizes self-power supply (ultra-low starting current ≥3A) by virtue of CT electromagnetic induction energy harvesting technology without batteries or external power supplies. Combined with LoRa spread spectrum technology, it is a long-term maintenance-free solution for long-distance temperature measurement nodes in high-voltage, strong electromagnetic power environments, and can be extended to passive temperature measurement scenarios in multiple industries.
Core Features
- Pure CT electromagnetic induction energy harvesting with a starting current ≥3A, eliminating monitoring interruptions caused by battery failure, and resistant to high voltage and static electricity
- Adopting LoRa spread spectrum modulation with strong anti-interference and signal penetration capabilities, supporting free selection of 41 channels and 6 power levels
- High-precision contact temperature measurement with an error of ±1℃; industrial-grade standard design, resistant to a wide temperature range of -40~85℃, adapted to the harsh conditions of power equipment
- Ultra-compact size (18.3×14.65mm), mountable in narrow spaces such as contacts and joints without modifying the temperature measurement points
- Supporting parameter configuration via AT commands/PC upper computer software; frequency points, power, transmission cycle and other parameters can be customized and retained after power-off
- Easy assembly, adapted to standard enclosures on the market, saving the mold cost of non-standard enclosures and supporting mass deployment
Key Specifications
- Operating frequency band: 410~450MHz
- Power supply mode: CT electromagnetic induction energy harvesting (starting current ≥3A)
- Temperature measurement accuracy: ±1℃; Temperature measurement range: -40~85℃
- Maximum transmission power: 22dBm; RF air baud rate: 18.23Kbps
- Reference transmission distance: 300 meters (at 5dBm)
- Serial port baud rate: 9600/19200/38400/57600/115200bps (115200bps by default)
- Module size: 18.3×14.65mm; Sleep current: 2uA
- Antenna interface: Dedicated spring antenna
Applicable Scenarios
Key heating nodes of power systems such as contacts of high and low voltage switchgear, high-voltage busbars, ring main units/medium voltage switchgear, and high-voltage cable joints. It can also be extended to long-distance passive temperature measurement scenarios such as tire temperature measurement, cold chain monitoring and water conservancy monitoring.
II. GC433-TX045 Active Sensor Module LoRa Solution
Core Positioning
A battery-powered dedicated LoRa wireless temperature measurement transmitting module that must be used with batteries and NTC temperature sensors. It forms a network with the GC433-RX043 receiver, and is designed with LoRa low-power spread spectrum technology and supports custom configuration of multiple parameters via software. It is the core transmitting unit for flexible deployment of medium and low-voltage, long-distance temperature measurement nodes in power temperature monitoring.
Core Features
- LoRa spread spectrum low-power design with a sleep current of only 1uA, effectively extending battery life and ensuring long-term stable operation
- Supporting free selection of 41 channels and 6 power levels, with flexible configuration of working parameters via AT commands/upper computer software
- Industrial-grade wide temperature design, resistant to a -40~85℃ environment and electromagnetic interference, adapted to the complex working conditions of power equipment
- Ultra-compact size (32×29mm), easy assembly with built-in network and data upload functions, supporting mass production and deployment
- Serial communication interface compatible with multiple baud rates (115200bps by default), enabling convenient docking with terminal devices and supporting one-to-one/one-to-many communication
- Maximum transmission power of 22dBm, combined with LoRa spread spectrum technology to ensure the stability and reliability of long-distance transmission
Key Specifications
- Operating frequency band: 410~450MHz
- Supply voltage: 2V~3.7V (3.3V typical, battery-powered)
- Temperature measurement accuracy: ±1℃; Temperature measurement range: -40~85℃
- Maximum transmission power: 22dBm; RF air baud rate: 18.23Kbps
- Serial port baud rate: 9600/19200/38400/57600/115200bps (115200bps by default)
- Module size: 32×29mm; Sleep current: 1uA
- Transmission cycle: 1~255S customizable
- Antenna interface: Dedicated spring antenna
Applicable Scenarios
Power temperature measurement nodes such as high-voltage busbars, medium voltage switchgear/ring main units, moving and static contacts, and high-voltage switchgear. It can also be extended to long-distance, flexibly deployable wireless temperature measurement needs in various industrial scenarios.
III. Core Advantages of the Integrated LoRa Temperature Measurement Solution
The LoRa temperature measurement solution composed of GC433-TX043 (Passive), GC433-TX045 (Active) and supporting receivers gives full play to the long-distance and anti-interference advantages of LoRa spread spectrum technology, as well as the complementarity of active and passive power supply modes, meeting the long-distance temperature measurement needs of power and multiple industrial scenarios:
- Core advantages of LoRa technology: The 410~450MHz frequency band features strong diffraction and penetration capabilities; LoRa spread spectrum modulation greatly improves anti-interference performance, and the maximum transmission power of 22dBm ensures stable long-distance transmission, superior to traditional 433MHz RF solutions
- Full coverage of power supply modes: Passive modules realize full-life maintenance-free operation via CT energy harvesting, solving the pain point of temperature measurement at high-voltage/strong electromagnetic nodes; active modules with battery power supply support flexible deployment, adapted to medium and low-voltage nodes where batteries are easy to replace, forming a perfect complement
- Convenient configuration and networking: Both support configuration via AT commands/PC upper computer software, with 41 channels and 6 power levels optional and parameter retention after power-off; the receiver can uniformly collect data from multiple modules and support ad-hoc networking, adapted to large-scale mass deployment
- Industrial-grade high reliability: All series of modules are designed in accordance with power equipment standards, featuring -40~85℃ wide temperature resistance, high voltage resistance, static electricity resistance, electromagnetic interference resistance, and stable temperature measurement accuracy of ±1℃, ensuring monitoring accuracy in complex environments
- Multi-scenario adaptability: In addition to core power temperature measurement scenarios, it can be extended to long-distance temperature measurement scenarios such as cold chain, water conservancy, tires and industrial cabinets, meeting the wireless temperature measurement needs of multiple industries in one stop
- Low cost and easy implementation: Ultra-compact size adapted to standard enclosures, easy assembly without additional modification; passive modules require no operation and maintenance, and active modules feature low power consumption, greatly reducing deployment and later operation costs
