With modules starting at just 3.5 mm wide, TERMITRAB complete surge-protective devices from Phoenix Contact can protect up to 572 signals on one meter of DIN rail. In addition to this ultranarrow option, the line includes variants that meet many specific measurement and control needs, including units that use optical monitoring capabilities to troubleshoot and diagnose a system from any location. Local and remote status indication simplifies maintenance. Some modules come in a pluggable format. The user can easily remove and replace devices without having to undo or redo connection wiring, saving time. The pluggable versions can be tested using the CHECKMASTER 2, a mobile test lab for pluggable units. They are available with push-in or screw connections. Eight variants are triple-rated for hazardous locations (IECEx; ATEX; and Class I, Division 2). A knife-disconnection option makes testing and evaluation convenient. 800-322-3225; www.phoenixcontact.com