Feature:1. Wide Compatibility: This solar charge controller is widely compatible with a variety of battery types, such as ternary lithium batteries, lithium iron phosphate, etc.2. Automatic Voltage Identification: This solar charge regulator integrates household type and street lamp type, and can automatically identify 12V or 24V3. Multiple Protection: This solar charging controller has multi protection of reverse connection, over discharge, over current, over charge, short circuit and power down, which is stable and reliable4. ABS Material: This solar panel controller is made of high quality ABS material, which has high strength and long last durability5. Application: This solar charge controller is widely used in new energy power generation systems such as solar energy and wind energyHow to Use:Wiring Method (All wiring must ensure power off connection):1. Correct connect the battery first, positive pole is on the left, the digital tube shows the word 1 or 2, 1 means entering the 12V system, 2 means entering the 24V system, after a few seconds, the LOAD light is on, and the battery indicator light is on.(Street light type: LOAD will be off during the day, and will be off for undervoltage and overvoltage). Otherwise check the wiring.2. Correct connect the battery board, positive pole is on the left, the power indicator light starts to race,&n