Model a15113000ux0594 Voltage Detector Module for Arduino Simple voltage presence detection up to 25V. This compact 3 terminal sensor module is designed to give a clear digital signal for microcontroller boards and development projects where monitoring DC voltage is required. Key benefits Clear function: detects DC voltage up to a maximum of 25 volts, making it suitable for common low voltage systems. Easy integration: standard three terminal header for power, ground, and signal simplifies wiring to Arduino and other microcontrollers. Saves development time: ready to use module removes the need to design and debug a custom voltage sensing circuit. Compact form factor: small PCB footprint fits into tight project enclosures and breadboard setups. Important attributes Function: voltage detection and output signaling for monitoring voltage presence or thresholds. Compatibility: intended for use with Arduino and other microcontroller boards that accept a digital input signal. Connections: three terminal header for VCC, GND, and output signal for straightforward hookup. Construction: PCB module populated with electronic components and a standard 3 pin connector for reliable connections. Performance: detects voltages up to 25V providing a simple on off style detection method for system monitoring tasks. Practical use scenarios Battery monitoring: detect whether a battery pack is supplying voltage and trigger alerts or shutdown routines when voltage is absent. Solar and power systems: verify presence of panel or supply voltage before engaging loads or charging controllers. Equipment fault detection: monitor power rails in DIY electronics and robotics projects to detect loss of supply and protect sensitive components. Quick setup tips Connect the module VCC and GND to your system power, and route the output to a microcontroller digital input pin. Confirm the target system input is compatible with the module output voltage levels before direct connection. Use the module for presence detection or as part of a larger monitoring routine that includes analog measurement if precise voltage values are required. This module model a15113000ux0594 provides a compact and easy to use solution for integrating voltage presence detection into microcontroller projects without complex circuitry.