Two selectable differential input channels On-chip active low noise PGA with selectable gain of 3264 and 128 On-chip power supply regulator for load-cell and ADC analog power supply On-chip oscillator requiring no external component with optional external crystal On-chip power-on-reset Simple digital control and serial interface: pin-driven controlsno programming needed Selectable 10SPS or 80SPS output data rate Simultaneous 50 and 60Hz supply rejection Current consumption including on-chip analog power supply regulator: normal operation Less than 1.5mApower down Less than 1uA Operation supply voltage range: 2.6 ~ 5.5V Operating Temperature Range:-20 degree ~ +85 degree Wiring method: positive (E+) red, power negative (E-) black, signal positive (S+) green, signal negative (S-) white color:Silver Material:Metal Package Contents: 4 x 1kg load cell weight sensor 4 x HX711 AD modules 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.