Features: 1. Applicable To Series Motherboards And Nano; Onboard ADS1256 Chip, 8-Channel 24-Bit High-Precision Adc (4-Channel Differential Input), 30ksps Sampling Rate 2. Onboard ADS1256 Chip, 2-Channel 16-Bit High-Precision Dac 3. The On-Board Pin Header Package Input Port Can Be Connected To Analog Signals, Making It Easy To Connect To Analog Sensor Modules. 4. Onboard AD/DA Input And Output Interface, Which Can Be Connected To Analog Signals And Digital Signals, Making It Easy To Use In Occasions 5. Comes With AD/DA Detection Circuit To Facilitate Observation Of Experimental Phenomena Description: 1. Type: Expansion Board 2. Specifications: High-Precision Ad/Da Expansion Board 3. Size: About 65.07 x 56.21mm Material: PCB Color as shown Package Contents: 1 x High-Precision AD/DA Board 1 Set Of Rpi Copper Pillar Package Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use 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.