Joy-IT HX711-40 ADC Module with 40 kg Load Cell - 24-bit A/D Converter, Pre-calibrated

For hobbyists and developers building precision weighing systems, the Joy-IT HX711-40 pairs a 24-bit HX711 analog-to-digital converter module with a 40 kg strain gauge load cell. The module is pre-calibrated, so you can quickly integrate it into Arduino, Raspberry Pi, ESP32, or other microcontroller projects without complex calibration routines.

Key specifications

• ADC chipset: HX711
• ADC resolution: 24-bit
• Load cell capacity: 40 kg
• Load cell type: Strain gauge (full-bridge)
• Operating voltage: 2.7 V – 5.5 V DC
• Output data rate: Selectable 10 SPS / 80 SPS
• Programmable gain amplifier: 32, 64, 128
• Input channels: 2 differential (Channel A, Channel B)
• Interface: 2-wire serial (clock, data)
• Load cell wiring: 4-wire (Red: E+, Black: E-, White: A-, Green: A+)
• Operating current: < 1.5 mA
• Operating temperature: -20 °C to +85 °C
• Load cell material: Aluminum alloy

Why choose it

The HX711-40 is pre-calibrated and ready to use, saving you time during setup. Its 24-bit resolution ensures precise weight readings, and the selectable gain and data rate let you optimize for speed or accuracy. The module works with common development boards, making it a flexible choice for both prototypes and permanent installations.

Ideal use cases

• DIY digital scales and weighing platforms
• Industrial measurement and force sensing
• Inventory management systems
• Educational electronics projects

Good to know

The load cell is made of aluminum alloy for durability and consistent performance. The module includes two differential input channels, allowing you to connect additional sensors if needed. Sleep mode power consumption is under 1 µA, which is useful for battery-powered applications.