Field Efficient: Simplifies the upgrade process on 1-inch to 2-inch valve sizes

Featuring a 40/5 MFD capacitance

The unit comes with a captivated screw already integrated into the dial

As a primary safety device

Schneider Electric (Barber Colman) 20-881 Wrench Field Efficient: Simplifies the upgradeThe Schneider Electric (Barber Colman) 20 881 Wrench is a specialized dual purpose tool engineered for precision field service on pneumatic control systems. Designed to replace the legacy N2 4 tool, this wrench features a 1 16" hex head and a 1 4" hex head, providing the exact dimensions required for pneumatic thermostat calibration and securing cover screws. This tool is essential for technicians managing Barber Colman 2000 series thermostats and