Base26 is a highly customizable bottom for industrial purpose. Similar to PLC Base but higher customized level. Package includes protoboard which allows you to add up your own circuit design. On the board, two Grove bonding pads are reserved. Other components come with the package is an M type waterproof joint and a TTL-to-RS485 converter board. The M type waterproof joint (M12*15)can be assembled on the side and the bottom of the Base.