1、Build‑in micro controller, automatically manage the working of solar panel and battery in solar system. 2、Multiple protection functions, solar controller has short‑circuit protection, open‑circuit protection,reverse protection, over‑load protection, dual reverse current protection, low heat production. 3、Full 4‑stage PWM charge management, improve system efficiency and prolong the life span of the battery. 4、The charge regulator is only suitable for lead‑acid batteries: OPEN, AGM, GEL, it is not suited for nickel hydride, lithium, Liions, or other batteries. 5、Comes with LCD display that can clearly indicate the status and data, it can be conveniently switched modes and parameter configuration, suitable for home, industrial, commercial etc. Condition: 100% Brand New Item Type: Solar Charge Controller Material: ABS Color: As shown in the picture Size: Approx.13.5x7cm/5.3x2.8in Weight: Approx.155g/5.5oz Current: 20A The charge regulator is only suitable for lead-acid batteries: OPEN, AGM, GEL Not suitable for: nickel hydride, lithium, Liions, or other batteries. Application: Home, yard, outdoor, business, etc. 1 x Solar Charge Controller 1 x Instruction Manual