With a clear window at the bottom of the connector you can easily inspect the connection and the built-in wire strip guide enables installers to check the correct stripping lenght and determine whether it can be pushed in. The compact design allows easier fitting in junction boxes ...With a clear window at the bottom of the connector you can easily inspect the connection and the built-in wire strip guide enables installers to check the correct stripping lenght and determine whether it can be pushed in. The compact design allows easier fitting in junction boxes and enclosures where space is often limited such as lighting and access control installations, which often call for multiple conductors to fit into a tight space.