Onboard ADS1263 chip, low noise, 10-channel 32-bit precision (5-channel differential input), 38.4KSPS Max sampling rate The chip comes with 24-bit auxiliary , internal , IDAC, 2.5V internal reference voltage, 8 multiplexed GPIO, (32 Max) On-board pin header package input interface, can access analog signals, compatible with -Snow sensor interface standards, easy to access analog sensor modules On-board terminal package input interface, which can be connected to analog signal and analog power supply, which is convenient for use in occasions On-board pin header package control interface, can access control signals, it is convenient to use devices other than to control this module On-board three-wire RTD (resistance temperature detector) circuit, by soldering 0R resistors, it is convenient to use three-wire RTD for measurement Type:High Precision AD Expansion Board Module color:Blue Material:PCB Package Contents: 1 x Expansion Board 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.