ITEM NAME:Solar Panel Controller Battery Charge Regulator 12V/24V Auto With Dual Usbï ¼Ë† D2Q9 Solar Panel Controller Battery Charge Regulator 12V/24V Auto With Dual Usbï ¼Ë† D2Q9 Suitable for solar green light, solar light boxes advertising board, solar insecticidal lights, housing solar power generation system, marine solar power generation system, outdoor survival solar power generation system automatic identification intelligent solar charge and discharge controller. With buttons, digital display, automatic memory function. With a complete 4-level PWM charge management function. Built-in short circuit protection, open circuit protection, reverse polarity protection, overload protection. Using dual MOSFET reverse current protection, less heat. Anti-lightning Product Name: Nixie tube solar controller Voltage: DC 12V / 24V Display: Nixie tube Self-consumption: 10MA Overcharge protection: 14.4V / 28.8V Overcharge Float charge: 13.7V / 27.4V Charge recovery voltage: 12.6V / 25.2V Over discharge protection: 10.7V / 21.4V Over discharge recovery: 12.6V / 25.2V Working temperature: -35 ℃ -60 ℃ Note: Make sure your battery has enough voltage so that the controller recognizes the battery before the first installation. The solar controller is only suitable for lead-acid batteries OPEN, AGM, GEL. Does not apply to nickel-metal hydride batteries, lithium-ion batteries or other batteries. PV system power Description: 60A battery 12V photovoltaic system:power is respectively 720W 60A battery 24V photovoltaic system:power is respectively 1440W colour:black Material:plastic Package Contents: 1 * solar controller 1 * Manual.Suitable for solar green light, solar light boxes advertising board, solar insecticidal lights, housing solar power generation system, marine solar power generation system, outdoor survival solar power generation system.