The Classic range costs of:

Type 201: Setpoints from 300 Pa to 7 500 kPa. Fixed or adjustable deadband, one or two setpoints, brass, stainless or monel wetted parts, electric or pneumatic switching, large setting scale, 0,5% repeatability, lowest deadbands, custom options.

The range is divided into:
Model 201: Fixed deadband, single set-point
Model 202: Narrow adjustable deadband, single set-point
Model 203: Wide adjustable deadband, single setpoint with individually adjustable set and reset points.
Model 281: Fixed deadband, dual independent setpoints.

Type 204/8/9: Diaphragm operated switches with high overload capability. Fixed deadband, single set-point, stainless or Monel wetted parts, electric or pneumatic switching, large setting scale, 1% repeatability, custom options. Setpoints from 5 to 1 500 kPa.

The range is divided into:
Model 204: Threaded connection, overload to 20 MPa.
Model 208: Open flanged connection for dirty or viscous applications. Overload tio flange rating.
Model 209: Hygienic IDF connection.

Type 231: Bourdon-tube operated switches for higher pressures. Mostly superceded by the Sovereign range. Setpoints to 60 MPa. Fixed or adjustable deadband, one or two setpoints, stainless or monel wetted parts, electric or pneumatic switching, large setting scale, 1% repeatability, lowest deadbands, custom options.

The range is divided into:
Model 231: Fixed deadband, single set-point
Model 232: Narrow adjustable deadband, single set-point
Model 233: Wide adjustable deadband, single setpoint with individually adjustable set and reset points.
Model 234: Fixed deadband, dual independent setpoints.