Features: Made of high quality material, which is reliable, sturdy and durable in use. It can work under 12V or 24V system voltage, waterproof and convenient to use. Overcharge protection, overdischarge protection and anti-reverse protection. Five load working modes, it is convenient to use on various street lamps and monitoring equipment. With temperature sensor, support high precision temperature compensation. Specification: Condition: 100% Brand New Material: ABS System voltage: 12V/24V Auto System current: 5A, 10A, 15A (optional) No-load loss: <5mA Solar input voltage: <55V Overvoltage protection: 16.5V; X2/24V Balanced charging voltage: 14.6V; X2/24V (25℃), maintenance time: 1 hour Increase the charging voltage: 14.4V; X2/24V (25 ℃), maintenance time: 2 hours Floating charge voltage: 13.8V; X2/24V (25℃) Charging return voltage: 13.2V; X2/24V (25℃) Over-discharge return voltage: 12.5V; X2/24V Over discharge protection: 10.8V; X2/24V Light control voltage: light control open 7V; light control off 2V Working temperature: -35℃ to +65℃ Protection level: IP68 Switching voltage: 11.0: X2/24V Size: Approx. 8.4*6.8*2.1 cm / 3.3*2.7*0.8 in Weight: Approx. 211g / 7.4 oz Package list: 1 * Solar Controller 1 * User Manual Recommendations: 1. The controller will recognize the battery voltage when it is powered on. Please use the battery to wait for initialization before using it and ensure the connection is reliable. 2. The controller will generate heat during operation. It is recommended to install it in a ventilated and heat-dissipating environment. 3. The controller will test the ambient temperature to compensate for battery charging, and try to put the battery and controller in the same environment. 4. Select a cable with sufficient capacity to avoid excessive loss on the line and the controller will make a misjudgment. 5. The inside of the controller is designed for common anode. If grounding is required, ground the anode. 6. It is very important that the battery is often filled, at least once a month, otherwise the battery will suffer permanent damage. The battery can only be fully charged when the energy entering the battery is greater than the energy used by the load. Keep this in mind when you configure your system. Controller Installation: 2. It can work under 12V or 24V system voltage. Please connect the battery first when using it. The controller will automatically recognize the battery voltage and start working. 3. Connect the "+" pole: The controller is designed for common anode. Connect the positive electrode of the battery, photocell and load to the positive terminal (red line) of the controller. 4. Connect the battery "-" pole: If the connection is correct, the controller indicator will flash, otherwise, check if the connection is correct. 5. Connect the solar panel "-" pole: If there is sunlight, the solar panel indicator will light up, otherwise, check if the connection is correct. 6. Connect the load "-" pole: connect the load cable to the load output of the controller, and the current cannot exceed the rated current of the controller.