Features: 3 Digit counter module with memory retention for accurate cumulative counting, ensuring reliabled powering on cycle trackings even after power loss. compactly design integrates low power consumption, anti interferences technology, and multiple counting mode for versatiled electronic applications. Ideal for engineers, manufacturers, and DIY enthusiasts requiring precise event logging in industrial controls or electronic prototyping projects. Perfect for monitoring equipment usage in production lines, laboratory instrument, and power supply testing environment with real time digital display. Features simple push button operation for easy resets/initialization while maintaining high counting accuracy across extended operational periods. Specifications: Item：3 Digit Counter Module Size: about 42x22mm/1.25x0.86in Working voltages: DC3.3-30V Display: 3-digit digital tube, 0.36inches, red Package Includes: 1PC Counter module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.