Gas Alarm GX-CO-12
€108.40
The compact CO detector for motorhomes, caravans and boats: TÜV-tested, for 12- and 24-volt electrical systems, with loud alarm and intelligent activation delay
The Schabus CO Detector GX-CO-12 is a compact, high-precision carbon monoxide detector for mobile use. It protects people in recreational vehicles from the acute effects of carbon monoxide wherever gas is used for cooking, heating or cooling: in motorhomes, caravans, campers and recreational vehicles with gas cookers or gas refrigerators, as well as in caravans and on boats.
The GX-CO-12 is connected to the 12-volt or 24-volt on-board electrical system. A suitable connection cable is included for mobile use; it is permanently installed in the vehicle and connected to the battery voltage. The detector uses an electrochemical sensor that is factory-calibrated, measures with high selectivity and shows only low cross-sensitivity to other substances. In the event of danger, it warns with a loud acoustic alarm and a red LED.
Behaviour, concentration limits and alarm thresholds follow the requirements of DIN EN 50291-1. The detector has been fully tested by TÜV Süd. An intelligent activation delay prevents false alarms: short CO peaks, for example when lighting a cooker, do not trigger an immediate alarm, while a genuine rise in CO is reported in good time. The device is ready for operation immediately after the operating voltage is applied; no warm-up time is required.
Important note: The GX-CO-12 is approved only for the described use. It must not be used in potentially explosive atmospheres and is intended for dry rooms in which people regularly stay. The device is designed to protect people from the acute effects of carbon monoxide. The sensor cable must be permanently installed as surface-mounted wiring, and the prescribed mounting height must be strictly observed.
Good to know: Carbon monoxide is colourless, odourless and tasteless, highly toxic and life-threatening. It is produced by incomplete combustion of carbon-containing substances such as wood, paper, gas, petrol or oil – in recreational vehicles, for example, by gas cookers, heaters and gas-operated refrigerators. You cannot smell it. Only a detector provides reliable warning.
Reliable warning without false alarms
The GX-CO-12 combines a TÜV-tested electrochemical sensor with a loud alarm, three status LEDs and an activation delay that complies with the standard.
Designed for mobile use
Developed for motorhomes, caravans, campers, boats and recreational vehicles with gas cookers or gas refrigerators.
For 12- and 24-volt electrical systems
Operates on battery-backed 12 V or 24 V on-board systems. Connection cable included.
Full TÜV testing to DIN EN 50291
The detector has been fully tested by TÜV Süd. The minimum activation delay times have been tested and confirmed.
Intelligent activation delay
The alarm only triggers after several measurements. At low CO concentrations the standard delay times apply; at high concentrations the warning is given quickly.
Electrochemical sensor
Factory-calibrated, highly selective, with low cross-sensitivity and long service life.
Loud alarm
The piezo buzzer sounds loudly in the event of an alarm. The red LED flashes or lights continuously as long as elevated CO is detected.
Three status LEDs
Green for operation, yellow for fault, red for alarm: the status is clearly visible at a glance.
Regular self-test
The sensor automatically performs a regular self-test. Faults are indicated by the yellow LED.
Test button
Checks the alarm sounder and all three LEDs. During an alarm it mutes the sound.
Replacement date on the device
The date (month/year) for the next sensor replacement is printed directly on the detector.
Output for external evaluation
The white wire is a voltage/PWM output for optional evaluation in the GX-A1+ (300892) or GX-HS (400200) devices.
What is included in the box
The GX-CO-12 is ready for immediate installation. The device has no options or additional variants.
- CO detector GX-CO-12
- Connection cable (sensor cable, 3-core) with RJ plug and open, tinned ends for the 12/24 V on-board system
- Mounting material: 2 screws and wall plugs
- Detailed operating and installation instructions
The sensor cable can be extended if required. If no external evaluation is used, the white wire remains unused.
How the GX-CO-12 is constructed
Electronics, sensor element and signal generator are housed in a robust ABS plastic enclosure that protects them from contact and rough environmental influences. The device contains no parts that you need to service and must not be opened.
ABS plastic housing
Protects the electronics and sensor element. Dust, moisture and direct sunlight should still be avoided as far as possible. The device is designed exclusively for upright wall mounting.
RJ socket (top)
The sensor cable is plugged in from above until a tangible and audible click confirms secure contact. The socket is also designed for a plug-in power supply.
Optimised outlet opening (top)
The opening at the upper end of the housing ensures air exchange at the sensor element.
Optimised inlet opening (bottom)
Through the slots at the lower end of the housing, room air containing carbon monoxide reaches the electrochemical sensor element.
Test button
For checking the alarm sounder and the LEDs. During an acoustic alarm, mute the sound by holding the button down for at least 2 seconds.
Green LED (OPERATE)
The detector is ready for operation and automatically performs a regular sensor self-test. The green LED lights continuously when voltage is applied and the self-test is successful.
Yellow LED (ERROR)
The sensor indicates a detected fault, for example power failure or a software or hardware defect.
Red LED (ALARM)
Flashes or lights continuously in the event of an alarm for as long as elevated CO concentration is detected.
Replacement date “Replace by date”
Shows the month and year for the next sensor replacement. When due, replace the detector with a new one.
Four openings for the piezo sound
The piezo buzzer is located behind the openings. In the event of an alarm and during the test it emits a loud tone. Keep the openings clear so that the sound can escape unhindered.
Sensor cable with three cores
Green is the positive pole of the battery, brown is the negative pole (ground). White is the voltage/PWM output for optional evaluation in the GX-A1+ (300892) or GX-HS (400200) devices and remains unused if no external evaluation is used. If the wire colours differ for production reasons, a label with the correct assignment is attached to the cable. Please do not remove this label.
Timely warning, avoiding false alarms
DIN EN 50291-1 specifies defined delay times for low CO concentrations. During the development of the GX-CO-12 the lower times were always taken into account, and TÜV has tested and confirmed the minimum times.
Multiple measurements
To avoid false alarms caused by minor fluctuations in gas concentration and thus prevent accidental shutdown of the heating system, the alarm only triggers after several measurements.
Short peaks are allowed
Short CO peaks, for example when lighting a cooker, do not trigger an immediate alarm.
The higher the CO, the faster
At low concentrations the delay is used; at high concentrations the detector alarms significantly faster.
Mute the sound
Hold the test button for at least 2 seconds during an alarm. This does not eliminate the danger: ventilate and identify the cause remains essential.
Correct placement and connection
The GX-CO-12 may only be installed in dry indoor rooms, including caravans and boats. It must be correctly positioned to ensure proper functioning of the warning device.
Wall mounting
- Carefully select the mounting location and drill two holes one above the other with a centre distance of 58 mm.
- Insert the supplied wall plugs and do not screw the screws fully home.
- Place the sensor on the screws and pull it downwards a few millimetres with light force. Using the keyhole principle, the screw heads hold the sensor securely on the wall.
- Route the sensor cable permanently as surface-mounted wiring. Ensure sufficient bend radii so that the cable is not kinked or crushed.
- Insert the RJ plug into the sensor from above until a tangible and audible click confirms secure contact.
- Connect the open ends to the on-board system: green to the positive pole, brown to the negative pole of the battery. The white wire remains unused if no external evaluation is used.
Where the detector should be mounted
- Room without sleeping area: On a wall near the ceiling and above all doors and windows, at least 15 cm below the ceiling. Maintain a distance of 1 to 3 metres from the suspected CO source.
- Partitions and beams: If the room has beams or similar, mount the detector on the side of the suspected CO source
- Sloping ceiling: Mount the detector on the higher side of the room
- Room with sleeping area but without combustion appliance: On a wall at the breathing height of the occupants. This also applies to escape routes and all other areas you wish to protect
- Caravans and boats: An optimal position is not always possible. Do not mount the detector directly above a heat or steam source and keep a distance of 1 to 3 metres from the nearest edge of the possible CO source
Where the detector must not be mounted
- In places that could prevent the alarm from triggering in the event of a gas leak, e.g. behind curtains, in cupboards, behind stacked boxes or other covers
- Directly above a cooker, combustion appliance or sink
- Next to a door, window, ventilation opening, fan or air-conditioning unit; constant draughts must be avoided
- In areas where dust or dirt could put the sensor out of operation
- In areas where a constantly high CO concentration is normally present
- In areas with constantly low or very low humidity, as this reduces the service life of the sensor
- In potentially explosive atmospheres
Commissioning
- Apply the operating voltage. The detector is ready for operation immediately; no warm-up time is required due to its design, unlike some other sensors.
- The green LED lights continuously when voltage is applied and the sensor self-test is successful.
- Press the test button once to check that the alarm sounder and all three LEDs are working.
What the LEDs mean and how to test
Green lights
The sensor is ready for operation and regularly performs an automatic sensor self-test.
Yellow lights
The sensor indicates a fault, for example power failure or a software or hardware defect. Disconnect the RJ plug from the sensor, wait about 1 minute and put the sensor back into operation.
Red flashes or lights
Alarm: The red LED indicates as long as elevated CO concentration is detected. At the same time the alarm sounder sounds.
All three LEDs light
This is the test: When the test button is pressed, the alarm sounder sounds and all three LEDs light. At the same time the relay in the optional device is switched.
The manufacturer recommends performing the simple functional test at least every six months. Clean the sensor regularly by blowing away the dust and protect it from moisture.
What to do in the event of an alarm
Proceed in the following order in the event of an alarm:
- Stay calm and open all doors and windows to increase the ventilation rate. Stop using all combustion appliances and, if possible, ensure they are switched off, for example by operating the emergency shut-off valve on gas appliances. Provide fresh air.
- If the alarm continues, evacuate the building. Leave doors and windows open and do not re-enter the building until the alarm has stopped. In multi-family houses and multi-storey buildings, ensure that all occupants are warned of the danger.
- Arrange medical help for anyone showing symptoms of carbon monoxide poisoning and point out that inhalation of carbon monoxide is suspected.
- Call the responsible maintenance or service company for the appliance or, if necessary, dial the emergency number of the relevant fuel supplier or the public emergency number so that the source of the CO emission can be identified and eliminated. This does not apply if the reason for the alarm is obviously false.
- Only put the combustion appliance back into operation after a competent person has checked it and released it for use again.
Symptoms of mild poisoning are headache, dizziness and flu-like complaints. Higher doses have a strong toxic effect on the central nervous system and the heart and can very quickly lead to unconsciousness and further to death.
Certain substances such as alcohol, petrol or solvents can cause false alarms.
What the CO detector does not replace
- The detector only indicates carbon monoxide at the sensor as long as the concentration there is above the trigger threshold. Carbon monoxide can also be present in other areas
- A CO detector is not a substitute for a smoke detector or a detector for flammable gases. Use suitable detectors for these purposes
- It does not replace the proper installation, use and maintenance of fuel-burning appliances with adequate ventilation and exhaust systems, nor the cleaning of chimneys
- Persons with relevant medical conditions should use a warning device that already produces audible or visible signals at CO concentrations below 50 ppm
- The detector may not provide sufficient protection for persons with specific medical conditions. In case of doubt, consult a doctor
Cleaning, care and sensor replacement
Cleaning and care
- Avoid moisture such as splash or rain water, dust and direct sunlight
- Clean the device only with a dry linen cloth, which may be slightly dampened in case of heavy soiling
- Do not use solvent-based cleaning agents
- Regularly blow the dust off the sensor
- Do not open the device; it contains no parts that you need to service
Sensor replacement
The date (month/year) for the next sensor replacement is shown on the detector. When due, please replace your sensor with a new one, as reliability can no longer be expected after the end of its service life. How long the sensor lasts depends on the ambient conditions.
Note on gas boilers
For installation in Viessmann gas boilers the manufacturer recommends articles 7639852 or 7549937. Always check the type plate on the rear to find the sensor that is right for you.
Manufacturer’s notes
- Read the operating instructions carefully before installation and commissioning and keep them; they form part of the product
- Packaging material is not a toy and does not belong in children’s hands
- Do not open the device
- Install only in dry indoor rooms, not in potentially explosive atmospheres
- Approved only for the described use
- Intended for living areas (houses, apartments, rooms), sales areas (shops, hypermarkets) and rooms of small businesses (workshops, service centres) that are connected to the public low-voltage network
- The sensor cable must be permanently installed as surface-mounted wiring; the prescribed mounting height must be observed
- The declaration of conformity is available for download on the manufacturer’s website
Warranty, guarantee and disposal
The GX-CO-12 is covered by the statutory warranty of at least 2 years in the EU. The manufacturer Elektrotechnik Schabus additionally offers a 5-year guarantee that can be registered online. Repair and spare parts are available directly from the manufacturer, even beyond the statutory warranty. The prerequisite is that the device has been used in accordance with the instructions.
The GX-CO-12 does not belong in household waste. The crossed-out wheeled bin symbol on the product reminds you to use the take-back systems so that the materials can be reused in an environmentally friendly way at the end of their service life (WEEE Reg. No. DE91394868). Further information is available from your local waste advice centre or from the manufacturer.
Why the GX-CO-12 is suitable
Made for on the go
For motorhomes, caravans, campers, boats and recreational vehicles with gas appliances.
12 V and 24 V
One detector for both common on-board systems, connection cable included.
TÜV-tested
Fully tested by TÜV Süd to DIN EN 50291.
Test result “Very good”
Warentest Online, private institute for product testing: grade 1.1 “Very good” (test period 02/25).
Few false alarms
Intelligent activation delay according to the standard; short peaks do not trigger an immediate alarm.
Ready for immediate use
No warm-up required; cable and mounting material included.
Always in view
Three LEDs for operation, fault and alarm plus replacement date directly on the device.
From the manufacturer
Made in Germany, personal expert advice, 5-year guarantee registrable, repair and spare parts directly from the manufacturer.
Areas of application
- Motorhomes
- Caravans and trailers
- Campers
- Boats
- Recreational vehicles with gas cooker or gas refrigerator
- Recreational vehicles with gas heating
- Boiler rooms with gas heating or gas boiler
- Residential and commercial areas where people regularly stay
The Schabus CO Detector GX-CO-12: CO detected, danger averted.
Frequently asked questions
For which applications is the GX-CO-12 suitable?
The GX-CO-12 is a carbon monoxide detector for mobile use in motorhomes, caravans, campers, trailers, boats and recreational vehicles with gas cookers or gas refrigerators. It is also suitable for boiler rooms with gas heating or gas boilers.
At what voltage does the detector operate?
The detector runs on battery-backed 12 V or 24 V on-board systems. The connection cable for mobile use is included. It is permanently installed in the vehicle and connected to the battery voltage.
How do I connect the cable?
The cable has an RJ plug on one side that is inserted into the detector from above until it clicks audibly into place. Connect the open, tinned ends to the on-board system: green to the positive pole, brown to the negative pole. The white wire remains unused if no external evaluation is used.
Why does the alarm not trigger immediately?
DIN EN 50291 specifies defined delays for low CO concentrations. This avoids unnecessary false alarms, for example due to short CO peaks when lighting a cooker. At higher concentrations the detector alarms significantly faster. The alarm only triggers after several measurements.
Can I switch off the alarm sound?
Yes. Hold the test button for at least 2 seconds during the acoustic alarm; the sound will then be muted. However, this does not eliminate the danger. Ventilate, stop using combustion appliances and follow the emergency measures.
Where do I mount the detector?
In a room without a sleeping area on a wall near the ceiling, above doors and windows and at least 15 cm below the ceiling, at a distance of 1 to 3 metres from the suspected CO source. In a room with a sleeping area mount it at the breathing height of the occupants. In caravans and boats the additional rule applies: not directly above a heat or steam source. The detector is designed only for upright wall mounting.
How long does it take for the GX-CO-12 to be ready for operation?
After the operating voltage is applied the detector is ready for operation immediately. No warm-up is required due to its design. The green LED lights continuously when voltage is applied and the sensor self-test is successful.
How do I test the GX-CO-12?
Press the test button. The alarm sounder sounds and all three LEDs light. The manufacturer recommends performing the simple functional test at least every six months.
What does it mean when the yellow LED lights?
The sensor has detected a fault, for example power failure or a software or hardware defect. Disconnect the RJ plug from the sensor, wait about 1 minute and put the sensor back into operation.
When does the sensor need to be replaced?
The date for the next sensor replacement is shown as month and year on the detector (“Replace by date”). When due, replace the detector with a new one, as reliability can no longer be expected thereafter. Service life depends on the ambient conditions.
Can false alarms occur?
The intelligent activation delay prevents false alarms caused by short CO peaks. However, certain substances such as alcohol, petrol or solvents can cause false alarms.
How do I clean the detector?
Regularly blow the dust off the sensor and wipe the device only with a dry linen cloth; in case of heavy soiling it may be slightly dampened. Do not use solvent-based cleaning agents and protect the device from moisture.
Is the GX-CO-12 tested?
Yes. The detector has been fully tested by TÜV Süd to DIN EN 50291. The minimum activation delay times have also been tested and confirmed by TÜV.
Does the CO detector replace a smoke detector or gas detector?
No. A CO detector is not a substitute for a smoke detector or a detector for flammable gases. Use appropriate detectors for these purposes.
Are there options or additional variants?
No. The GX-CO-12 has no options. With the connection cable and mounting material it is complete.
How long is the warranty?
The statutory warranty of at least 2 years applies in the EU. In addition, the manufacturer Schabus offers a 5-year guarantee that can be registered online.
Questions about the CO Detector GX-CO-12?
Our support team in Germany will advise you free of charge on selection, installation and configuration.
GAS ALARM GX-CO-12 – Carbon Monoxide Detector for Mobile Use
The GX-CO-12 is a mobile CO detector powered by a 12–24 V DC battery that reliably detects carbon monoxide and provides both acoustic and visual alerts. With its compact design, electrochemical sensor, and high measuring accuracy, it is ideal for construction sites, mobile applications, or temporary use in technical rooms.
Technical Data
- Operating voltage: 12–24 V DC (battery)
- Current consumption: approx. 31 mA @ 24 V operating voltage, max. 50 mA (alarm)
- Protection rating: IP 20
- Alarm indication: acoustic (>85 dB @ 1 m, piezo buzzer) and visual (LED)
- Alarm thresholds: 1 second @ 300 ppm, 10 minutes @ 100 ppm, 60 minutes @ 50 ppm
- Measurement accuracy: ±1 %
- Relay / connection: RJ12 socket
- Cable length: 2.5 m, Ø 3.5 mm
- Dimensions (H×W×D): 88 × 58 × 38 mm
- Weight: approx. 91 g
Environmental Conditions
- Operating range: -5 °C to +45 °C
- Storage temperature: -20 °C to +60 °C
- Humidity: 10–90 % RH, non-condensing
Sensor Technology
- Gas type: Carbon monoxide (CO)
- Measuring principle: Electrochemical
- Warning concentration: 30–300 ppm (sensor range up to 1000 ppm)
- Sensor service life: Up to approx. 5 years, depending on environmental conditions
Manufacturer information:
Electrical engineering Schabus GmbH & Co. KG
Baierbacher Straße 150
83071 Stephanskirchen
Germany
Telephone: +49 80 36 / 674 979 – 0
Email: info@elektrotechnik-schabus.de
Responsible person:
Didactum® Security GmbH
Im Mühlenfeld 4
48163 Münster
Deutschland
Fon:
(+49) 250 19 71 63 54 / (+49) 171 33 11 577
Email: info@didactum-security.de
