Take full control of lighting with a compact, reliable relay module that automatically switches circuits based on ambient light. Key benefits Automatic lighting control: photoresistor-based light detection turns lighting circuits on or off without manual intervention, reducing energy waste and simplifying operation. Wide voltage compatibility: works with DC 5V, 12V, or 24V power supplies, making it easy to integrate into a variety of systems. Solid switching capacity: built-in relay handles up to 10A, suitable for many lighting loads and auxiliary circuits. Compact, installation-friendly form: size optimized for 12V setups but compatible with 5V and 24V systems, so it fits easily into common control panels and fixtures. Quick setup and use: straightforward wiring and simple configuration let you install and start using the module with minimal effort. Features and performance Sensing: photoresistor provides ambient light detection for automatic brightness control and clear daylight/nighttime switching. Switching: relay output switches external circuits based on the detected light level, enabling on/off control of lamps, lighting strips, or other low-voltage devices. Electrical specs: DC input selectable at 5V, 12V, or 24V; relay current rating 10A. Design: compact PCB module sized for 12V operation while remaining compatible across the three supported voltages; built from standard electronic components for reliable performance. Ease of integration: compatible with typical low-voltage lighting systems and control circuits; simple wiring means fast installation and commissioning. Practical applications Porch, entry, and pathway lighting: automatically switch lights at dusk and off at dawn for convenience and energy savings (install in a protected enclosure appropriate for outdoor use). Retail or display lighting: ensure signs and display illumination activate only when needed to maintain consistent presentation and reduce run-time costs. Small facility or greenhouse supplemental lighting: automate lighting cycles in controlled environments without complex controllers. What this module solves Eliminates the need for manual switching or complex timers for basic ambient-light control. Reduces energy usage by ensuring lights run only when ambient conditions require them. Simplifies retrofits: add automatic control to existing low-voltage lighting circuits without redesigning the system. Compatibility checklist Power: DC 5V / 12V / 24V input Load capacity: up to 10A via relay Sensing: photoresistor (ambient light detection) Mounting: compact PCB size suitable for 12V installations; use appropriate enclosure for other environments Easy to install, compatible with common low-voltage systems, and effective at automating lighting based on ambient light, this relay module provides a practical, dependable solution for a range of lighting-control needs.