Product Dimensions:5.2 x 6.8 x 2.3 cm; 38 Grams Part number:OK-01 Material type:Plastic Specification: MultifunctionalThere are reverse polarity protection for battery, solar panel and auto temperature compensation function, which provides reliable performance and long service time. Solar ChargeMonitor Solar Charge . Widely Use The solar charge controller is easy to set up and operate, it is suitable for home, industrial and commercial. Battery Charging Units. Best ProtectionThis solar panel charge controller is built-in over-current protection, short-circuit protection, open-circuit protection and reverse protection. Which is good protection for solar panel light Batteries Accessories. 3-Stage PWMThe controlleris fully 3-stage PWM charge management. Automatically manage the working of solar panel and battery in solar system. Quality GuaranteeQuality checks strictly in every section during the fabrication. If you have any questions about our product, please contact us. We will be very happy to answer questions and resolve problems for you. MultifunctionalThere are reverse polarity protection for battery, solar panel and auto temperature compensation function, which provides reliable performance and long service time. Solar ChargeMonitor Solar Charge . Widely Use The solar charge controller is easy to set up and operate, it is suitable for home, industrial and commercial. Battery Charging Units. Best ProtectionThis solar panel charge controller is built-in over-current protection, short-circuit protection, open-circuit protection and reverse protection. Which is good protection for solar panel light Batteries Accessories. 3-Stage PWMThe controlleris fully 3-stage PWM charge management. Automatically manage the working of solar panel and battery in solar system. Quality GuaranteeQuality checks strictly in every section during the fabrication. If you have any questions about our product, please contact us. We will be very happy to answer questions and resolve problems for you.