Honeywell S301D2NO2 NO2 Remote Sensor 301EM

Product Description

The HONEYWELL S301D2NO2 is a nitrogen dioxide remote sensor designed to work with the 301EM gas detection controller. It monitors NO2 concentrations in the ambient environment and transmits readings back to the controller for alarming and system response. This sensor is typically installed by licensed HVAC technicians or building automation contractors in commercial or light-industrial settings where combustion byproducts or vehicle exhaust require continuous monitoring. The S301D2NO2 is a field-mounted remote unit, keeping detection at the point of concern while the controller handles logic and output functions.

This sensor is suited for applications where nitrogen dioxide exposure is a safety concern, such as parking garages, loading docks, mechanical rooms, and other enclosed spaces with combustion sources. It pairs specifically with the 301EM controller, which manages alarm thresholds, relay outputs, and system responses based on sensor input. Installation in commercial environments typically follows local building codes and ASHRAE ventilation standards for hazardous gas detection systems.

Key Features

• Detects nitrogen dioxide gas for continuous ambient air quality monitoring
• Remote sensor design keeps detection at the source while the controller remains centrally located
• Designed to pair with the Honeywell 301EM gas detection controller
• Suitable for commercial and light-industrial indoor environments

Compatibility

Designed for use with the Honeywell 301EM gas detection controller as a remote NO2 sensing module.

Installation Notes

Installation should be performed by a qualified technician familiar with gas detection systems and applicable local codes. Power down the 301EM controller before connecting or disconnecting the remote sensor. Mount the sensor at the appropriate height for nitrogen dioxide detection per the controller documentation and site requirements. Follow all wiring guidelines provided with the 301EM controller and verify proper system operation after installation.

Technical Specifications

• Gas Type: Nitrogen Dioxide (NO2)
• Sensor Type: Remote
• Compatible Controller: 301EM

Standard Information

• Brand: HONEYWELL
• Manufacturer Part Number: S301D2NO2