Possible range of supply voltage is 12V (recommended) up to 24V DC
Use blade screwdriver 2.4mm and connect power as shown in Fig:
Before connecting any cables, make sure that they are not at a high voltage, otherwise, you're in danger.
Nutrition standards and grounding must comply with the country of use and all work related to the power and ground connections must be made in accordance with the country standard.
Necessary to follow the instructions of the product.