Remote CO2+Oxygen Storage Safety Dual Alarm

Remote CO2+Oxygen Storage Safety Dual Alarm
Remote CO2+Oxygen Storage Safety Dual Alarm
Remote CO2+Oxygen Storage Safety Dual Alarm
Remote CO2+Oxygen Storage Safety Dual Alarm
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  • RAD-0200

  • RAD-0202

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Browse more CO2 Safety Alarm or additional CO2Meter products.


The Remote CO2 + Oxygen Storage Safety Dual Alarm is designed to protect people who work near carbon dioxide stored in tanks, closets or confined spaces, or who work with compressed nitrogen and run the risk of oxygen depletion in enclosed areas.

  • Wired CO2/Oxygen Monitor & Remote Sensor
  • 2 Audible & Visible CO2 Alarms w. Relays

CO2 alarms are critical in breweries, wineries, beverage dispensing areas, restaurants, fast food establishments, dry ice storage, CO2 storage tanks, laboratories, or anywhere CO2 is stored or produced in high volume. The addition of an oxygen depletion alarm also makes this device critical for cryogenic, medical and industrial applications where nitrogen is stored. Like CO2, a nitrogen leaks in enclosed areas can quickly lead to asphyxiation. By monitoring oxygen levels, nitrogen leaks can be found.

The Remote CO2 + O2 Storage Safety Alarm has both an audible alarm and flashing visual indicator when CO2 concentrations reach a pre-set level, or when oxygen drops below a pre-set level. Built-in relays can be used to control a ventilation fan, an HVAC control alarm, and to notify maintenance staff off-site when the PEL (Personal Exposure Limit) is exceeded. Learn more about room size coverage area.

The Remote CO2 + Oxygen Storage Safety Alarm is easy to install and use. Watch the installation video. Simply mount both units on the wall (all cables and hardware included), plug the display unit into a standard wall jack, and the alarm is ready to protect you and your staff.

Optional High Altitude Model

A special high altitude model of the RAD-0200 is available upon request.  This special model has pre-set alarms at 16% O2 and 10% O2 respectively.  Contact us for information and pricing.


  • Sensor connects with Remote Display Unit using cable (25 ft. included).
  • Large digital LCD display clearly indicates the current CO2 level and temperature
  • 2 Relays to control fans and/or remote warning signal
  • 80dB Audible and visual alarm indicators
  • IP65 Enclosure - utilize included plug and cover the device during cleaning or washdown


  • Measurement Range: 0-5% (50,000ppm) CO2, 0-30% Oxygen
  • CO2 Alarm: Relay 1 @ 1.5%, Relay 2 @ 3% (configurable)
  • Oxygen Alarm: Relay 1 @ 19%, Relay 2 @ 17% (configurable)
  • Alarm Response Time: < 60 seconds
  • Operating Temperature: 0-50C (32-122F)
  • Calibration: Manual Calibration with Test Gas
  • CO2 Sensor Life Expectancy: 15 years
  • Oxygen Sensor Life Expectancy: > 2 years (Order replacement sensor) (Watch sensor replacement video)


  • Power Supply: 110-220VAC to 6VDC Adapter
  • Power Consumption: 3 Watts
  • Relays: Peak Current < 2A @ 30VDC or 250VAC, SPDT
  • Relay Color Coding:   Red & White = Normally Open   Blue & White = Normally Closed


  • 1 Year

Carbon dioxide Safety Alarm Data Sheet (pdf)

Manual Storage Safety Alarm Manual (pdf)

Manual Storage Safety Alarm Calibration Procedure (pdf)

Safety Alarm fan circuit Exhaust Fan Relay Wiring Diagram (pdf)

CO2 warning sign NBIC-Mandated CO2 Warning Sign (pdf)


Installation Installation

Vent cover Vent Cover Removal

set alarm Change Alarm Defaults

Fan relay Relay Controlled Exhaust Fan