Product description What this device does and why it matters Protects batteries and connected equipment from common failure modes so systems run longer and require less maintenance. Prevents battery damage from over-discharge, under-voltage and over-voltage conditions, and stops excessive load discharge current to avoid overloads. Automates charging and lighting behavior to match daily schedules and light conditions, reducing manual intervention. Monitors internal temperature and protects the whole unit from overheating to reduce risk of fire or component failure. Key functions (concise) Battery protection: over-discharge, over-voltage and under-voltage protection to preserve battery life and system reliability. Load protection: overload protection that limits or cuts load discharge current when it exceeds safe levels. Time control mode: manual settable charging ON and OFF times to implement fixed daily charging schedules. Light control + time delay: light-sensor control combined with a programmable time delay and adjustable duty cycle when light control is active. Thermal protection: whole-unit overheat protection that reduces risk of damage in high-temperature conditions. Benefits for the user Longer battery life and fewer replacements because the controller prevents deep discharge and voltage extremes. Safer operation: overload and thermal protections reduce the chance of damage to wiring, loads and the controller itself. Simpler system management: manual time control and light-triggered operation let you automate charging and lighting without additional timers or sensors. Flexible lighting behavior: when light control is enabled you can set the light duty cycle and delay timing to match usage needs and save energy. Practical attributes Function: integrated protection and control features for battery charging, load management and temperature safety. Compatibility: intended for systems that use battery charging and controlled DC loads where timed or light-triggered operation is required. Performance: provides automatic intervention for over/under voltage, overload currents and overheating to maintain reliable operation. Installation and use: supports manual programming of charging start/stop times and configuration of light control with delay and duty-cycle settings. Typical applications (use scenarios) Solar lighting: control daytime charging and nighttime lighting with automatic light-sensor control and time-delay/duty-cycle settings to extend battery life and reduce power use. Off-grid battery systems: protect batteries and loads in remote power setups where manual monitoring is impractical; use time control to schedule charging windows. Backup and stand-by loads: limit discharge current and shut down loads under fault conditions, while using timed charging to keep batteries topped up safely. Why choose this controller Combines multiple essential protections and practical control modes in one unit so you do not need separate devices for voltage protection, overload control, timer functions and thermal safety. Reduces maintenance and operating risk by preventing common electrical faults and by allowing predictable, programmable behavior for charging and lighting. Note: Configure the time and light-control settings according to your battery type and load requirements to ensure optimal protection and performance.