Can be used by combining joint tap type and power cord length. With a lock, the joint tap and extension cord are difficult to fall off. Cannot be used with older products that do not display "with lock" in the product name. (There is a locking lever on the side of the joint tap for a lock/unlock is a "lock." ) (The outlet part of the extension cord is movable, and there is a dent to lock on the side of the connector is "with lock". A total of 1,500 W / 15 A. The joint tap and extension cord has a lifespan. To prevent fire accidents, we recommend replacing it for 3 to 5 years. (This is not the **and service life of the product. Replacement time is approximate. Usage Precautions (please refer to the instruction manual in the product attached for details) Exceeding capacity may cause burns and may cause fire. Total up to 1,500 W (joint tap and lock included), 4 outlets and 1 USB port only up to 1,400 W). Please do not use with the cord twisted or pulled. It may cause heat or ignition. Do not use in areas where it is exposed to water. It may cause fever, ignition, or electric shock. Do not use the power plug when it is plugged into the middle end. It may cause fever, ignition, or electric shock. When unplugging the power, hold the power plug and unplug without holding the cord. This may cause damage to the product, electric shock, or fire. Do not secure cords, hang on doors and furniture or put on objects. It may cause fire due to disconnection or heat generation. Please do not open or disassemble or modify the main unit. This may cause electric shock or fire. Please clean the plug surface and gap between the blade of the plug, which may cause a fire. Do not put the plug in for a long time in dusty or humid place.

From the Manufacturer

Joint tap / lock / extension cord / 9.8 ft (3 m)

Can be used by combining joint tap type and power cord length.With a lock, the joint tap and extension cord are difficult to fall off.Cannot be used with older products that do not display "with lock" in the product name.Connects up to 1500 W / 15 A in total.

Extension Cord: 3.9 inches (10 cm). It is convenient when you dont have space to plug in large AC adapter such as AV devices.It can also be carried compactly when traveling.	Joint tap with USB port USB compatible devices can be powered and convenient for charging.	Magnetic Parts You can attach the joint tap to the back of the "joint tap with lock" to secure the joint tap to a metal shelf.	Unit Shelf Sailboat Mounting Parts You can attach the joint tap to the back of the "joint tap with lock" and hook the joint tap to the canvas on the unit shelf.