Automatically adapt to the b-attery voltage 12V/24V, making it possible to easy operation. This product control the b-attery voltage and turn on the circuit. Also, when the battery voltage rises to a certain level, it will stop the b-attery charging. Features: The solar charge controller equipped with dual USB ports, support 5V/2.5A max USB output. This product provides short-circuit protection,open-circuit protection, reverse protection, overload protection. Perfect and safe to use in various applications, such as home, industrial, commercial etc. Solar controller can clearly indicate the status and data, it can be conveniently switched modes and parameter configuration. This product is perect for l-ead-acid batteries: OPEN, AGM, GEL, not suitable for nickel hydride,lithium ions, or other batteries. Using PWM charge management, actually improve the c-harging efficiency. Adjustable floating charge voltage, d-ischarge stop voltage and discharge reconnect voltage. Specifications: B-attery voltage: 12V/24V Auto Adapt Material: ABS Item color: blue & black C-harge current: 10A, 20A, 30A, 40A, 50A, 60A, 100A (optional) Max power: 120W:10A/12V, 240W:20A/12V, 360W:30A/12V, 480W:40A/12V, 600W:50A/12V, 720W:60A/12V, 1200W:100A/12V 240W:10A/24V, 480W:20A/24V, 720W:30A/24V, 960W:40A/24V, 1200W:50A/24V, 1440W:60A/24V, 2400W:100A/24V Discharge current: 10A, 20A, 30A, 40A, 50A, 60A, 100A Max solar input: 50V Floating charge voltage: 13.7V (defaul, adjustable) D-ischarge stop voltage: 10.7V (defaul, adjustable) D-ischarge reconnect voltage: 12.6V (defaul, adjustable) Charge reconnect: 13V Self-consume: 10mA USB output: 2 way USB output, 5V 2.5A Operating temperature: -35~+60 Item size: 133 * 70 * 35 mm / 5.24 * 2.76 * 1.38 in Item weight: 134 g / 4.73 ounce Package size: 135 * 80 * 40 mm / 5.31 * 3.15 * 1.57 in Package weight: 165 g / 5.82 ounces Notes: 1. Make sure your b-attery has enough voltage for the controllers to recognize the b-attery type before installation. 2. The b-attery cable should be as short as possible to minimize loss. 3. The regulator is ONLY suitable for l-ead acid batteries: OPEN, AGM, GEL. (NOT suitable for nickel metal hydride, lithium ions or other b-atteries) 4. This controller can ONLY use photovoltaic panel as c-harging source, do NOT use D-C or other power supply as c-harging source. Package List: 1 * Solar Charge Controller 1 * Instruction