GC433 Series 433MHz Temperature Measurement Modules
GC433-TX025 (Active) and GC433-TX023 (Passive) are two types of 433MHz wireless temperature measurement modules developed specifically for power temperature monitoring scenarios. Differentiated primarily by their power supply modes, they are adapted to the installation and monitoring requirements of different temperature measurement nodes of power equipment, forming a complementary solution featuring flexible deployment of the active type and maintenance-free operation of the passive type. Both realize stable wireless data transmission based on 433MHz RF technology.
I. GC433-TX025 Active 433MHz Temperature Measurement Module
Core Positioning
A battery-powered dedicated wireless temperature measurement transmitting module that must be used with batteries and NTC temperature sensors. It forms a network with the GC433-RX023 receiver as the core transmitting unit for flexible deployment in power temperature monitoring, and supports custom configuration of working parameters via software.
Core Features
- Ultra-low power consumption design: transmission current of 35mA@14dBm and sleep current of only 2uA, effectively extending battery life
- Support for free selection of 32 channels and 8 power levels, configurable via AT commands or PC upper computer software
- Industrial-grade standard design, resistant to a wide temperature range of -40 ~ 85℃, adapted to the complex working conditions of power equipment
- Ultra-compact size (29mm×30mm), easy assembly, support for mass production and deployment, with built-in network and data upload functions
- Serial communication interface compatible with multiple baud rates (115200bps by default), enabling convenient docking with terminal devices
Key Specifications
- Operating frequency band: 433MHz
- Supply voltage: 1.8V~3.6V (3.3V typical)
- RF air baud rate: 9.6Kbps (fixed)
- Reference transmission distance: 150 meters
- Transmission cycle: 1~255S adjustable (30S by default)
- Antenna interface: dedicated spring antenna
Applicable Scenarios
Temperature measurement of high-voltage busbars, moving and static contacts of high-voltage cabinets, and various temperature measurement nodes without long-term strong electromagnetic environments in power cabinets. It can also be extended to short-distance wireless temperature measurement needs in other industrial scenarios.
II. GC433-TX023 Passive 433MHz Power Temperature Measurement Module
Core Positioning
A professional passive wireless temperature measurement module for power equipment, realizing self-power supply by virtue of electromagnetic induction energy harvesting technology without batteries or external power supplies. It is a long-term temperature measurement solution for key heating nodes in high-voltage and strong electromagnetic power environments, designed exclusively for the maintenance-free requirements of power operation and maintenance.
Core Features
- Pure passive energy harvesting: powered by the electromagnetic field of the measured power equipment, eliminating monitoring interruptions caused by battery failure
- 433MHz RF combined with anti-collision algorithm, featuring strong cabinet-penetrating transmission capability and stable operation even under a strong alternating electromagnetic field of 500KV/4000A
- High-precision contact-type temperature measurement with an error of ＜±1℃, and the temperature measurement range covers the common temperature rise interval of power equipment
- Micro-structural design, mountable in narrow spaces such as moving contacts and cable joints without drilling or modification of temperature measurement points
- Industrial-grade protection, resistant to harsh environments such as humidity, dust, and extreme temperatures, with a long design service life (following the general 10-year standard for passive power temperature measurement)
Key Specifications
- Operating frequency band: 433MHz (unlicensed industrial frequency band)
- Power supply mode: electromagnetic induction energy harvesting (adapted to power equipment with a current of 10～5000A)
- Temperature measurement range: -40℃~+150℃
- Transmission power: +13dBm
- Reference transmission distance: 60 meters through cabinets (longer in open areas)
- Transmission interval: 60～65S, with temperature data uploaded in seconds
Applicable Scenarios
Key heating nodes of power systems such as contacts of high and low voltage switchgear, knife switches, high-voltage cable joints, dry-type transformers, and low-voltage high-current cabinets, especially suitable for high-risk temperature measurement scenarios with high manual inspection difficulty, strong electromagnetic fields and high voltage.
III. Core Advantages of the 433MHz Integrated Temperature Measurement Solution
The 433MHz power temperature measurement solution composed of GC433-TX025 (Active), GC433-TX023 (Passive) and supporting receivers gives full play to the characteristics of the 433MHz frequency band and the complementary advantages of active and passive modules, meeting the full-scenario temperature measurement needs of power systems:
- Strong frequency band adaptability: 433MHz is an unlicensed industrial frequency band with better penetration and diffraction capabilities than 2.4G and other frequency bands, perfectly adapted to the complex transmission environment with multiple metals and barriers in power cabinets.
- Full scenario coverage: Passive modules solve maintenance-free temperature measurement of high-voltage and strong electromagnetic nodes, while active modules are flexibly deployed in medium and low-voltage nodes where batteries are easy to replace, forming a complementary combination.
- Easy networking: Supporting ad-hoc networking, the receiver can uniformly collect data from multiple modules, dock with power monitoring platforms via RS-485/serial port and support the ModbusRTU protocol without additional communication network construction.
- Low operation and maintenance cost: Passive modules achieve full-life maintenance-free operation, and active modules feature low power consumption and long battery life. With the upper computer software, remote configuration and real-time monitoring are available, and temperature anomalies trigger second-level alarms, greatly reducing the cost of manual inspection.
- Industrial-grade reliability: All series of modules are designed in accordance with power equipment standards, with anti-electromagnetic interference, wide temperature resistance and flame-retardant protection, and a transmission accuracy of over 99.8%, ensuring the stable operation of power systems.
