The weighing sensor is connected to HX711 using a four wire Wheatstone bridge configuration. These are usually colored RED, , , GRN, and . Each color corresponds to the conventional color code of the weighing sensor: Red (motivation+or VCC) Black (excitation or GND) White (amplifier+, signal+or output+) Green (A -, S -, or O -) Yellow (blocked) The pin is used as an optional input and is not connected to a strain gauge, but is used for grounding and shielding against external (electromagnetic interference). Please note that some force sensors may have slight variations in color coding. Working voltage: 2.7V-5V Working current: Less than 1.5mA You can choose 10SPS or 80SPS output data rate Simultaneously provide 50 and 60Hz power suppression Color: Red Material: PCB Package Contents: 1 * module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.