Solar Regulator 40 Amp 12/24-Volt High Efficiency MPPT Solar Charge Controller 520WThis controller constantly tracks your solar panels maximum power point. Adapting in real time to changes in temperature and sunlight using advanced MPPT technology.MPPT delivers far higher performance than traditional PWM controllers, extracting more power and pushing your solar system to peak efficiency.A wide input voltage range lets you connect multiple solar panels with voltages up to 100V, while remaining fully compatible with standard 12V and 24V off-grid systems.The controller handles up to 520W of solar input on 12V systems and up to 1040W on 24V systems.It really shines when panel voltage exceeds battery voltagesuch as charging a 12V battery from a 36V solar panelmaximising energy harvest where it matters most.Built-in electronic protection keeps your system safe and reliable, with automatic cut-off against overcharging and deep discharge, night-time reverse current protection, and full safeguards against short circuits, overvoltage, overload, and reverse polarity. Intelligent fault detection and self-diagnosis highlight issues instantly.The controller also supports lithium batteries. Select the lithium charging profile via PC software and fine-tune charging parameters to match your battery setup perfectly.Technical:The controller automatically recognises 12/24V battery systems (note a battery should always be connected to the controller first before connecting a solar panel)Built-in LCD screen shows real-time charging parameters such as voltage, current (separately for solar panel / load), battery state of charge, accumulatedcharge anddischarge energyEasy to use buttons allow the user to manually select the battery type (sealed, flooded or gel) and program load settings (e.g. set timers for lighting, fans, pumps etc).Current limiting function (10A)allows the possibilityof addingmore solar panels to your solar system in the futureController specifications:The most advanced MPPT technology to ensure high efficiency (>95%) of your solar systemFully automated operation and auto 12/24V selection for lead acid batteries3 pairs of terminals (solar panel, battery, load) for wires up to 16mm2Maximum solar panel voltage 100VMaximum solar panel power 520W (12V) / 1040W (24V)Temperature sensor for automatic compensation (-3mV/C/2V)(auto temperaturecompensation not enabled for lithium batteries)Comprehensive electronic protection featuresCommunication port: RS485/RJ45 interfaceGrounding: negative common groundCurrent limiting function (40A)Self-consumption: <12mAWorking temperature: -25C to +50CSize:25.2 x18 x6.3 cmMounting dimensions:21 x 17.1 cmWeight: 1.65kgMultiple mounting holes (5mm diameter) for ease of installation