Feature: 1. HIGH STABILITY: The DS1881 data acquisition module use a dual channel, non volatile digital potentiometer to ensure that data will not be lost in emergency situations 2. DESIGNED FOR SOUND APPLICATIONS: The 5V signal level design make this data acquisition module suitable for sound system applications, meeting the professional needs of high power sound equipment 3. POWERFUL ZEROING CROSSING DETECTION FUNCTION: The module has a zeroing crossing detector, which can change the tap position when the potentiometer has no voltage, achieve no clicking operation, and significantly improve the user experience 4. CONNECT MULTIPLE DEVICES: The data acquisition module has three address pins and can connect up to eight devices on a single I2C bus, expanding the application range of the module to meet the different needs of users 5. WIDE RANGE OF POWER CHARACTERISTICS: The power input range of VDD is 3V~5V, which can adapt to the different power needs of various types of equipment and has wider applicability Specification: Item Type: Data Acquisition Module Material: PCB VCC: 5V AVCC: 3V - 5V. Package List: 1 x Module 1 x User Manual