11SM401

Honeywell Sensing 11SM401 Combination Smoke and Carbon Monoxide Alarm

The Honeywell Sensing 11SM401 is a sophisticated, battery-operated combination smoke and carbon monoxide (CO) alarm designed to provide early warning against two potentially life-threatening hazards: smoke and CO gas. This versatile alarm is ideal for enhancing the safety of homes and small offices.

Constructed from high-quality materials, the 11SM401 boasts a sleek, contemporary design with a white gloss finish that blends seamlessly with almost any decor. Measuring 6.5 inches in diameter and 1.6 inches in depth, the unit is compact enough to install in various locations, including bedrooms, living rooms, and hallways.

The 11SM401 features electrochemical CO sensors and photoelectric smoke sensors that can detect a wide range of CO concentrations and smoke densities. The CO sensor can detect levels as low as 15 parts per million (ppm), while the smoke sensor can identify smoke particles as small as 0.3 microns. This exceptional sensitivity allows the alarm to provide timely alerts, ensuring occupants can take swift action to mitigate potential harm.

Equipped with an electrostatic paint finish, the 11SM401's sensors are resistant to the negative effects of common household chemicals, such as cooking oils and aerosols, ensuring optimal performance over the long term. Additionally, the unit's Test and Silence buttons enable users to easily verify its functionality and momentarily quiet false alarms, respectively.

The 11SM401 comes with a 9V alkaline battery that guarantees a long battery life of up to 10 years, eliminating the need for frequent battery replacements. When the battery reaches the end of its life, the unit will emit a series of beeps to alert users to replace it.

This Honeywell smoke and CO alarm is interconnectable with up to 12 other compatible Honeywell alarms, allowing them to communicate and sound an alarm simultaneously when a hazard is detected. This feature enhances the overall safety of the home by providing multiple warning points, ensuring occupants have ample time to evacuate.

Designed with user convenience in mind, the 11SM401 features a hush feature that can be activated to silence the alarm for up to 8 hours. This function can be particularly useful during late-night false alarms or while cooking, allowing users to maintain a peaceful environment without compromising their safety.

In summary, the Honeywell Sensing 11SM401 is a state-of-the-art, battery-operated combination smoke and carbon monoxide alarm that offers advanced protection against two deadly hazards. Its sleek design, exceptional sensitivity, long battery life, and interconnectability make it an essential safety device for modern homes and small offices.

The Honeywell Sensing 11SM401 is a combined carbon monoxide (CO) and natural gas detector. Here are some pros and cons that may help you decide whether to purchase this device:

1. Dual Sensing: The 11SM401 can detect both CO and natural gas, providing an additional layer of safety against different types of gas hazards.

2. Digital Display: The device features a clear digital display that shows the current gas level concentration, battery status, and alarm status.

3. Easy-to-Understand Alarms: The 11SM401 provides easily distinguishable alarms for CO and natural gas, making it easier to identify the specific gas hazard.

4. Battery Operated: The device is battery-operated, allowing for easy installation and mobility.

5. Test and Reset Button: The 11SM401 includes a test and reset button, making it simple to check the functionality of the device and silence false alarms.

1. Battery Replacement: Since the device is battery-operated, regular battery replacements are necessary to ensure continuous operation.

2. Sensitivity: Some users have reported false alarms triggered by certain household products, such as cooking or spray paint.

3. Size: The 11SM401 is relatively large compared to some other CO and natural gas detectors, which may make it less aesthetically pleasing for some homeowners.

The Honeywell Sensing 11SM401 is a reliable and effective combined CO and natural gas detector that can help ensure the safety of your home against various gas hazards. Its digital display and clear alarms make it easy to use and understand, while its dual sensing capabilities provide an extra layer of protection. However, its battery operation and potential for false alarms are important considerations. Ultimately, the decision to purchase the 11SM401 depends on your personal preferences and safety needs.

I would recommend the Honeywell Sensing 11SM401 to homeowners who want a reliable and effective combined CO and natural gas detector for their home. Its dual sensing capabilities, clear alarms, and digital display make it an excellent choice for ensuring the safety of your home against various gas hazards. However, be prepared for the need to regularly replace batteries and be aware of potential false alarms.

Details:

Call to use a shipping service other than the ones listed. Part number 11SM401. The product is used surplus. Packaging and handling: items are safely eds packaged in custom shipping cartons for protection.

All products are guaranteed to be working but may show signs of use.

specifications indusswitch:

• brand: Honeywell Sensing Solutions
• mpn: 11sm401
• part type: Box

payments indusswitch:

• wallet: paypal
• other
• credit card: visa

offer indusswitch:

• availability: in stock
• options: ship-to-home
• started: december 1, 2025
• sold #: 12
• prices: $9.98–$199.99
• item condition:
  • New – Open box
  • New
  • Used

shipping indusswitch:

• type: fixed
• service: standard
• transit: 4-9 days
• class: standard

returns indusswitch:

• policy: returns accepted
• paid by: buyer
• method: money back
• time: 30 days

general indusswitch:

• category: Business & Industrial > Electrical Equipment Supplies > Microswitches

seller indusswitch:

• # reviews: 180367
• rating: 99.2%
• city: 1 millennium dr, willingboro, nj 08046

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