Simple Digital Electronic Clock Timer Counter and Clock Electronic Hobby Kit

Features: AT89C2051-based of four electronic clock kit Kit Model: YSZ-4 Supply voltage: 3V-6V PCB Size: 52mm * wide 42mm Function: 1. Seconds correction (for precise School) 2. Switch to every minute independent display interface 3. whole point of time (8-20 o\'clock chime can be turned off) 4. Two alarm settings (you can turn off the alarm function) Kit Features: A. 0.56 inch special red digital clock for display; B. Import AT89C2051 for master chip; C.1.2mm thick PCB made from military grade FR-4 board; D. accurate travel time, travel time error range error -1 to +1 seconds every 24 hours. Package included: 100% Brand New 1x Electronic Clock DIY Kits 1x Manual This produce is DIY kits, not the end product! We don\'t provide technical assistance please make sure you are familiar with the product before purchasing.