... function supported 4.12 month warranty PWM 12V/24V 15A solar charger controller Specification Products specification1Model YH-SC12152NameSolar regulator3Rated voltage12V/24V automatic ... put, overload,short-circuit,answer the reverse,etc7Has the TVS lighting protection, no jump line design, can enhance the system ... in cold ,high temperature,humid environment PWM 12V/24V solar charger controller