This is a controller for solar-DC pump, connecting 18V solar panel and 12V DC micro pump. Lithium battery attached inside for night working. Battery charged automaticlly by solar panel. Plug type Solar panel - 5521 waterproof with screw ring DC micro pump - 5521 waterproof with screw ring It should be a touch screen timer, setting 3 parameters: Working days (1~9) / times per day (1~9) / miniutes per time(1~9). This is a standard purchasing for us/Canada/Australia branded chain supermarkets, please consider needed certifications, industrial standard and regulations like UL / FCC / CSA. Professional solar timer controller manufacturers has the priority! Kindly noted your product/company/name in your contact email or messages, thanks. Show More