Cubic Sensor and Instrument Co.,Ltd.

Carbon Monoxide Alarm JM-AM4302R

Cubic JM-AM4302R is a battery powered CO alarm with relay developed based on electrochemical technology, especially designed for CO leakage detection in indoor environments.


JM-AM4302R embedded with Cubic self-developed electrochemical CO sensor, offers high stability, selectivity, and repeatability for CO leakage detection while minimizing interference from gases such as acetic acid and ethanol. It also provides high detection accuracy across the full temperature range and measurement span, ensuring reliable and durable performance in diverse indoor conditions.


Cubic JM-AM4302R responds rapidly to elevated CO levels, providing early warnings through audible and visual alarms with a sound output of up to 85 dB. It will be triggered automatically when dangerous CO concentrations are detected, following graded thresholds of 50 ppm, 100 ppm, and 300 ppm, in compliance with safety standards.


The alarm includes self-checking and silence button functions for simple and convenient operation. It is battery-operated with a lifetime of up to 10 years, supporting long-term, maintenance-free application. A relay signal output is also available, allowing integration with external control systems for extended functionality.


JM-AM4302R is fully compliant with UL2034, EN50291, and RoHS standards. OEM/ODM turnkey solutions are available for flexible customization. With the compact design, it is easy to install on walls or other surfaces, suitable for a wide range of indoor environments.


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Features Specification

Features of Carbon Monoxide Alarm JM-AM4302R

  • Electrochemical technology

  • Integrated with self-developed electrochemical CO sensor

  • High selectivity, resistant to acetic acid and ethanol interference

  • High detection accuracy over the full temperature and measurement range

  • Fast response to elevated CO concentrations

  • Audible and visual alarm with sound output up to 85 dB under graded alarm thresholds 

  • Relay signal output available for external control

  • Self-checking and silence button functions

  • Battery-operated with up to 10 years  lifetime

  • Compact design for easy installation

  • Compliant with UL2034, EN50291, and RoHS

  • OEM/ODM turnkey solutions available

Specification of Carbon Monoxide Alarm JM-AM4302R

Detection GasCarbon Monoxide
Working PrincipleElectrochemical
Detection Range0-500ppm
Detection Accuracy±5ppm or  ±5%@23°C±2°C, take whichever is greater
Alarm Threshold

50ppM Between 60 to 90 minute

100ppM Between10 to40minutes

300ppM Less than 3minutes

Alarm ResetAutomatic reset when the leaked gas is cleared/ Press the button to silence the sound
Working Conditions-10°C ~ +50°C ;  0%RH - 95%RH non condensing
Working Air Pressure86kPa ~ 106kPa
Applicable PlaceIndoor
Power SupplyBattery powered
Product WeightAround 600g
Product Size130*58*80mm
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