The CD-420 4-20 mA two-wire transmitter continuously monitors for toxic gas or O2 hazards in ambient air. Engineered with field-proven sensing and instrument technology, the CD-420 provides reliable early hazard warnings at an affordable price.

Advanced micro-power electronics deliver superior performance, eliminating false alarms and providing a direct linear output for compatibility to existing control systems. With a faster response
time, the CD-420 provides reliable early hazard warnings at an
affordable price. Add a duct mount kit or sensor separation kit
with ease.

Features

• Direct linear 4-20 mA output with a wide supply voltage
  range (12 to 35 volts DC)
• Plug-in electrochemical sensor
• Diagnostic signal transmission during system faults or
  sensor degradation
• Field-selectable gases and measuring ranges
• Power-up delay that eliminates startup alarms
• Failure/brownout protection