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CM4 Toxic Gas Monitor

Continuous monitoring of toxic gases on 4 points using Chemcasstte®.
Features & Benefits
  • Total surveillance at all times
  • Easy installation into virtually all annunciation and shutdown systems
  • Physical evidence of events
Quick Specs
  • Chemcassette® Technology
  • Analog and Serial Outputs
  • 300' (90m) Sampling Distance
  • LonWorks® Interface Available
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Additional Information

Product Overview

This CM4 unit represents the latest in interference free, low maintenance, low cost of ownership solutions for the semiconductor, pharmaceutical and chemical industries.

Its low profile 1/4" tubing minimises intrusion into process areas, ducts, gas cabinets, etc.  A variety of signal outputs are available making CM4 a truly flexible product. It easily installs into most building alarm systems.

An optional rack mount enclosure and printer fill out the product range, providing convenient housing and documentation capability. The unit is capable of detecting over 25 gases - some within the same family (hydrides, mineral, acids, etc.)

Additional Features and Benefits:

•  Continuous Monitoring on 4 Points
   Total surveillance all the time

•  Chemcassette® Technology
    Reliable, interference-free method provides physical evidence of events

•  Analog and Serial Outputs
   Permits easy installation into virtually all annunciation and shutdown 

•  300' (90m) Sampling Distance
   Monitors can be positioned conveniently with minimal fab intrusion

•  Table, Wall or Rack Mount Versions
Flexible to meet any requirement

•  LonWorks® Interface Available
Permits peer to peer communication and low cost of installation

•  Serial Printer Option
Permits archiving of all important events and system configurations

•  Integral Audio and Visual Alarms
Easily identifies all events

 CM4 Toxic Gas Monitor - Honeywell Analytics

Popular Accessories

From power options to carrying cases, we have a multitude of accessory items to go with your monitor.

CM4 Duty Cycle Option


Duty cycle option: Allows selection of time period before next window advance. Reduces tape consumption.

CM4 Okidata Desktop Printer Option


Okidata desktop printer option, 24 pin, dot matrix - non-rack mount, serial input Includes 10 ft cable 110/115 VAC.

CM4 Seven (7) Unit Enclosure


Seven (7) Unit Enclosure for CM4: 100- 120VAC.

CM4 Single printer configuration


Single printer configuration.

Frequently Asked Questions

Have a question about the product features or warranty? Find the answers here.
We do not sell our products directly on our website but we would be happy to assist you with your gas detection needs.  On each product page you will see a red button on the right-hand side titled “HOW TO BUY”.  If you click on this button a form will appear which will go directly to one of our sales representatives once completed and submitted.  

You can also call one of our sales representatives directly.  Click here to go to the Contact Us page.  

There are two areas where you can access technical documents.  First, you can visit our Technical Library in the Support section of the website.  Here you will be able to access our entire catalog of documents and videos for all products – current and legacy products.  

You can also access the technical documents for each product on that product’s respective page within the website.    

Yes we do.  Check out our HA University training section to see what programs are available and sign up for any that you are interested in.  These courses are very informative and led by our expert engineers.  If you have any questions about training opportunities for yourself or your staff and would like to talk to a Honeywell representative, click here.

Check out the Product Inquiry page in the Contact Us section.  Here you’ll find sales contacts for each of our product lines and they can help you with any questions you may have from technical specifications to ordering information. 

Check out the Service & Repairs page in the Contact Us section.  Here you’ll find the contact information for our service centers in your region. 

There are several ways you can search for products on our website:

  • Click on the Products link in the main navigation to search by product lines.
  • Find products for a specific Industry or Application by clicking on the links in the main navigation bar at the top of the page.
  • Use our Gas Finder if you’re looking for a product that can detect a specific type of gas.
  • If you still can’t find the product you’re looking for, type the name of the product in the search bar at the top of the page.

Because we do not sell our products directly we cannot quote a specific price on our website.  Contact a sales representative through either the “HOW TO BUY” button on the product page or by calling them and they will be able to obtain pricing from local distributors in your area. 

Similar Products

Check out some of these similar products.
Industrial gas detector -  SPM Single Point Monitor - Honeywell Analytics
Fast response device that detects down to the ppb of toxic gases and provides physical evidence of a gas event.
Applications: Laboratory Medical
Vertex M - Honeywell Analytics
Provides a flexible 8 to 24 points of monitoring using colorimetric Chemcasstte®, the industry’s most reliable gas monitoring technology.
Applications: Laboratory Medical
Toxic Gas Monitoring System - Vertex Multi-Point - Honeywell Analytics
Combines the most advanced Chemcassette®, software and optics technologies into a flexible, reliable monitoring system with up to 72 points of gas detection.
Applications: Laboratory Medical

Looking For More Information?

Check out these documents. If you can't find what you're looking for here, check out our Technical Resource library.
CM4 User Manual
Language: English US
CM4 Rack Mounting System - Datasheet - English
CM4 Rack Mounting System - Datasheet - English
Language: English US
CM4 Serial Communication Protocol - Operating Instructions - English
CM4 Serial Communication Protocol - Operating Instructions - English
Language: English US
CM4-P - Datasheet - English
CM4-P - Datasheet - English
Language: English US