Feature: 1. The module is designed for wide voltage, and the power supply range is DC 3‑5.5V. There are 2 power supply methods. 2. The module is connected to the pressure sensor first, and then energized. After connecting with the sensor for the first time, calibration is required. 3. This module sensor has functions such as peeling and calibration. USB cable power supply or own wiring (reserved interface). 4. This modular pressure sensor has a power off save, no need to re‑calibrate for future use. 5. This didital weight modular sensor is made of plastic, making it durable and has a long service life. Specification: Item Type: Weight Module Sensor Material: Plastic Power Supply Range: DC 3~5.5V (There Are 2 Power Supply Methods, USB Cable Power Supply Or Self-wiring) Display: Use 4-digit Digital Tube Display. Can Display up to 9999g Module Size: Approx. 50x33x10mm/2x1.3x0.4in. Package List: 1 x Weight Module Sensors Note: The digital tube display module does not have a power cord. If you need USB power supply, please buy it yourself.