... 4.12 month warranty PWM 12V/24V 15A solar charger controller Specification Products specification1Model YH-SC12152NameSolar regulator3Rated voltage12V/24V ... product automatic identification system voltage 12V/24V2Battery protection, avoid solar battery overcharger3Adapter MCU contol, five charging and discharging LED ... cold ,high temperature,humid environment PWM 12V/24V solar charger controller