Features 1LCD Display: This solar charge controller features a large screen LCD display which displays charging and discharging current accumulated electricity generated and discharged temperature etc. 2Double USB Output: The controller has 2 USB output the maximum current arrives 2.5A it supports charging for IOS. 3Charging Management: The complete 3 phases charging management enable you to use the controller more safely and conveniently! 4Multi Protection: Built in over current short circuit protection open circuit protection reverse connection protection are all self recovery type without damaging the controller. 5Low Heat Generation: The controller features an anti back flow circuit with ultra low heat value. You can take it with confidence! Specification Item Type: Solar Charge ControllerMaterial: ABSThreshold Value of Light Control on: 8V for photovoltaic panel (there is delay for light control on)Threshold Value of Light Control Switch Off: PV panel 8V (there is delay for light control switch off)USB Output: 2 way USB output 5V 2.5A (maximum)Standby Current: Less than 10mAWorking Temperature: - 35 to +60 Package List 1 x Solar Charge Controller1 x Manual Note 1. This controller is automatically recognized by 12V24V. When installing for the first time please ensure that the battery has enough voltage so that the controller can recognize the correct battery type2. The controller shall be installed as close to the battery as possible to avoid voltage drop caused by too long wire which will affect normal voltage judgment.3. This controller is applicable to all kinds of leadacid batteries (including batteries with openings sealing acid bodies etc.). If lithium charged batteries need to be familiar with their battery characteristics they can only be used after the charging parameters are set. For example when charging 12V lithium battery the output protection setting of 9.5V is prohibited. Full charge protection 12.2V starting charging voltage 11.5V when the battery drops4. This controller can only use photovoltaic panels as the charging source. Do not use DC or other power supplies as the charging source.5. The controller will generate heat when it is running. Please install the controller on a flat and well ventilated surface.