The XT series offers some outstanding features and benefits. First of all, the small size of the XT allows space savings on panels. Also, since the XT is based on Tyco Electronics widely-accepted RT series printed circuit board relay, a proven design is now offered with more robust terminals for socket mounting. Thanks to its tinted transparent cover, visual examination of the contacts for wear is now possible. Additionally, the XT series has silver-nickel contacts and is fully compliant with the RoHS directive.