CHENBO(TM) 5 Pcs HX711 Weighing Sensor Dual-Channel 24 Bit Precision A/D Module Pressure Sensor Two selectable differential input channels On-chip active low noise PGA with selectable gain of 32, 64 and 128 Simple digital control and serial interface: pin-driven controls, no programming needed Selectable 10SPS or 80SPS output data rate Size:25mmx15mm/1.56"x0.79"(inch) (approx)