The WAGO part 249-106 is a B-type test plug module that is modular in design and is used for testing electrical connections. It is specifically designed for use with 1.50 mm² wire size and comes in a gray color. This test plug module allows for easy and efficient testing of electrical circuits, ensuring accurate and reliable results. Its modular nature enables it to be easily integrated into existing systems and makes it convenient to install and remove when necessary. Trust the WAGO part 249-106 for all your testing needs.