Features: Power input terminals, the upper end is ground wire and the lower end is +5V. LT3461 power supply chip, high ripples noise rejection ratio. LP2985 and LDO can effectively filter out low-frequency noise, generate +5V, and provide analog power for ASD1256. ADR431BRZ, B series is a high precision benchmarks. The reference chip generates a high-precision 2.500000V reference. Input resistance and attenuation resistance. Attenuation resistors is not soldered by defaults. ADS1256 main control chip. AMS1117-3.30V provides digital voltages for ADS1256. Specifications: Size:Approx.4.6x6.6cm/1.81x2.6inch Package Includes: 1 Set Data Acquisition Board note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.