CO Alarm GX-C3pro Plug-in Device 230V
€150.42
The plug-in CO alarm that doesn’t just warn – it switches off the source of danger
The Schabus CO ALARM GX-C3pro is a plug-in CO warning device with an external sensor and integrated shut-off function. It monitors carbon monoxide (CO) at all heat-generating systems, for example heating systems, gas boilers, gas cookers, gas ovens, oil heating and any combustion appliance with air supply. In the event of danger it warns acoustically with a loud piezo signal tone and optically with a red flashing LED, and it switches off the connected source of danger, for example a gas boiler, a heating boiler or a burner.
The GX-C3pro is simply plugged into a wall socket – batteries never need to be changed. The external sensor is mounted at nose height, where CO is inhaled first, and can therefore be optimally positioned independently of the socket location. It can even be mounted outside the room: the sensor cable can be routed through a wall opening (Ø 13 mm) so that the warning unit can remain outside the monitored room.
The sensor is a TÜV-tested, long-life electrochemical CO sensor in accordance with DIN EN 50291 (with exceptions, see operating instructions). The alarm characteristic is graduated: at high CO levels the alarm is triggered quickly, at lower concentrations it is delayed in accordance with the standard. This minimises false alarms while reliably detecting gradual poisoning. The CO alarm is designed for years of continuous operation, performs regular automatic self-tests and deliberately dispenses with a display for a robust design reduced to the essentials.
Important note: The GX-C3pro responds exclusively to carbon monoxide (CO), not to natural gas or LPG. The unit and sensor may only be installed in dry indoor areas, not in potentially explosive atmospheres. Always observe the prescribed mounting height of the sensor. Installation must be carried out by a qualified specialist.
Plug in, position the sensor, be protected
The GX-C3pro combines standards-compliant CO detection with an active protective function: in the event of an alarm the source of danger is switched off.
Simply plug in
230 V plug-in unit with simple installation, no annoying battery changes – always ready.
Automatic shut-off
In the event of an alarm the connected appliance is switched off, e.g. gas boiler, heating boiler or burner.
Standards-compliant CO detection
TÜV-tested electrochemical sensor in accordance with DIN EN 50291 with graduated alarm characteristic.
Acoustic and visual
Loud piezo buzzer and red flashing LED provide reliable warning.
External sensor
Connected via plug connector, can be positioned at the optimum height, independently of the socket.
Sensor also outside the room
The sensor cable fits through a wall opening (Ø 13 mm); the warning unit can remain outside the monitored room.
Self-test and test button
Regular automatic self-test as well as a test button to check LEDs, sounder and shut-off function.
Cable break and plug-in protection
If the sensor cable is not connected or not connected correctly, this is detected as a fault and the connected appliance is switched off.
Also in damp rooms
Can also be used in bathrooms and other damp rooms as long as the moisture does not condense.
Controlled reset
Release only after successful ventilation by briefly unplugging and re-plugging.
What’s in the box
Everything needed for installation is included – nothing else has to be purchased.
- CO warning unit GX-C3pro (plug-in unit)
- External CO sensor with connection cable
- Mounting material for the sensor (1 screw, 1 wall plug)
- Operating instructions
How the GX-C3pro is constructed
The system consists of the plug-in unit with integrated shut-off function and the external sensor, which is connected to the plug-in unit via a cable.
Plug-in unit
The warning unit is plugged directly into a 230 V socket and is self-powered from the mains – no battery is required. It evaluates the sensor signal and switches off the connected source of danger in the event of an alarm, for example a gas boiler.
External CO sensor
The TÜV-tested electrochemical sensor measures carbon monoxide directly in the room air. It is mounted separately from the plug-in unit, at the optimum height and as close as possible to the combustion appliance to be monitored, and is fixed with the supplied screw and wall plug.
Sensor cable with plug connector
The sensor is connected to the plug-in unit via the sensor cable with RJ plug connector. The cable allows free placement of the sensor and can, if required, be routed through a wall opening (Ø 13 mm) so that the warning unit can remain outside the monitored room.
Status indicators (LEDs)
LEDs on the plug-in unit and on the sensor indicate the status. After plugging in, the LED on the plug-in unit lights up red briefly, then the green LED lights up on both units. The yellow LED on the sensor indicates a fault, the red flashing LED an alarm.
Sounder (piezo)
The piezo buzzer emits a loud acoustic signal in the event of an alarm.
Test button on the sensor
The TEST button on the sensor can be used to check the LEDs, the sounder and the shut-off function. In the event of an alarm it can also be used to acknowledge the acoustic warning.
Self-test, cable break and plug-in protection
Intelligent software performs regular self-tests on the sensor. If a fault is detected, the yellow LED on the sensor lights up and the connected appliance is switched off. The same applies if the sensor cable is not connected or not connected correctly.
Position the sensor correctly and put it into operation
Read the operating instructions carefully before installation and first commissioning and follow the safety instructions in particular. Installation must be carried out by a qualified specialist.
Sensor position for carbon monoxide (CO)
Close to the combustion appliance
Mount the external sensor as close as possible to the combustion appliance to be monitored or to the flue, chimney or stack, but at least 30 cm below the ceiling. The escaping gases are heated and initially rise.
At nose height
The sensor is mounted at nose height, where CO is inhaled first.
These locations are not suitable for the sensor
- Places that could prevent alarm triggering in the event of a gas leak, e.g. behind curtains or in cupboards
- Directly above a cooker or combustion appliance or above a sink
- Next to doors, windows, ventilation, fans or air conditioning
- Areas where dust or dirt could put the sensor out of operation
- Potentially explosive atmospheres
Commissioning
- Mount the sensor as described above and connect it to the plug-in unit via the plug connector.
- Plug the plug-in unit into a 230 V socket. The LED on the plug-in unit lights up red briefly, then the green LED lights up on both units.
- After the sensor warm-up time of approx. 5 minutes the system is ready for operation.
- Connect the appliance to be monitored, e.g. the gas boiler, and finally press the test button to check function and shut-off.
Alarm immediately after warm-up? Due to different transport conditions (long storage, moisture), an alarm may be triggered immediately after the warm-up period and the LED will flash red. Briefly disconnect the GX-C3pro from the mains and restart the warm-up period. This process may need to be repeated up to three times.
How the GX-C3pro reacts and how you check it
Only when the sensor detects an elevated CO concentration for longer than 30 seconds do the standards-compliant alarm delay times start. The higher the concentration, the faster the alarm is triggered.
What happens in the event of an alarm
- After the delay time has elapsed the unit gives an alarm: the red LED flashes and the sounder emits a loud acoustic signal.
- At the same time the connected appliance is switched off, e.g. the gas boiler.
- Pressing the TEST button acknowledges only the acoustic warning.
- Power to the unit’s socket is only released again when the measured CO concentration has fallen sufficiently. The reset is performed after successful ventilation by briefly unplugging and re-plugging the GX-C3pro.
Behaviour in the event of an alarm (or if you smell gas)
- Do not unplug the warning unit
- Do not switch on any other electrical appliances
- Do not light any open flame and extinguish any open fire
- Immediately open windows and doors and ventilate the room or house thoroughly
- Inform other persons in the house – everyone must leave the house
- Check the room or house for any sources of fire, as carbon monoxide is also produced during the smoke development of fires
- Eliminate the cause of the gas leak; if in doubt contact the energy supply specialist
- In the event of a persistent or repeated alarm, contact the energy supply specialist or the fire brigade
Test and fault indication
The GX-C3pro responds exclusively to CO, so the sensor itself can only be tested with CO gas. To check the LEDs, the sounder and the shut-off function, press the TEST button on the sensor. In addition, intelligent software performs regular self-tests on the sensor. If a fault is detected, the yellow LED on the sensor lights up and the connected appliance is switched off. A sensor cable that is not connected or not connected correctly is also treated as a fault – a gas boiler connected to the plug-in unit is then switched off in any case. The yellow LED on the sensor can only light up if at least the operating voltage lines are in order.
Sensor inspection: The date (month/year) for the next sensor inspection is indicated on the sensor. Please send the sensor to Elektrotechnik Schabus for factory inspection.
Manufacturer’s notes
- Read the operating instructions carefully before installation and first commissioning and keep them safe
- Installation only by a qualified specialist
- Do not open the unit – it contains no user-serviceable parts
- Packaging material is not a toy and must be kept away from children
- Install unit and sensor only in dry indoor areas, not in potentially explosive atmospheres
- Observe the prescribed mounting height of the sensor
- Avoid moisture (splash or rain water), dust and direct sunlight
- Suitable for normal household use; not approved for other uses
- Intended for residential, commercial and small business areas with connection to the public low-voltage network
- The CE declaration is available for download on the manufacturer’s website
Cleaning and care
Clean the unit only with a dry linen cloth, which may be slightly dampened if heavily soiled. Do not use solvent-based cleaning agents.
Warranty, guarantee and disposal
The GX-C3pro 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 GX-C3pro does not belong in household waste. The crossed-out waste bin symbol on the product reminds you to use the take-back systems for waste electrical equipment (WEEE No. DE91394868). Further information on collection, reuse and recycling systems is available from your local waste advisory service.
Why the GX-C3pro is suitable
Active protection
Automatically switches off gas boiler, heating boiler or burner in the event of an alarm.
Standards-compliant
TÜV-tested electrochemical sensor in accordance with DIN EN 50291 with graduated alarm characteristic.
Flexible sensor
Can be positioned at the optimum height, also outside the room via a wall opening.
Unmissable
Loud piezo tone and red flashing LED.
Always active
Plug-in operation on the 230 V mains – no battery required.
Self-monitoring
Regular self-test, test button as well as cable break and plug-in protection.
Controlled restart
Release only after ventilation and reset by briefly unplugging and re-plugging.
From the manufacturer
Made in Germany, 5-year guarantee can be registered, repair and spare parts directly from the manufacturer.
Areas of application
- Households with gas boilers or gas heating
- Boiler rooms: shut-off of gas or oil boilers in the event of flue gas backflow
- Technical rooms with heating boilers or burners
- Kitchens with gas cookers or gas ovens
- Living rooms with open fires
- Bathrooms with gas instantaneous water heaters (as long as the moisture does not condense)
- Rooms with oil heating
- Holiday homes and retrofits wherever a socket is available
- Workshops and small businesses
- Any combustion appliance with air supply
The Schabus CO ALARM GX-C3pro: CO detected, danger averted. Safety you can plug in.
Frequently asked questions
Which gas does the GX-C3pro detect?
The GX-C3pro responds exclusively to carbon monoxide (CO). It is not a detector for natural gas or LPG. It monitors CO at all heat-generating systems, e.g. heating systems, gas boilers, gas cookers, gas ovens, oil heating and any combustion appliance with air supply.
What happens in the event of an alarm?
The sounder emits a loud acoustic signal, the red LED flashes, and the connected appliance, e.g. a gas boiler, is switched off. The appliance remains switched off until sufficient ventilation has taken place and the reset has been performed.
Why doesn’t the alarm trigger immediately at low CO levels?
The alarm characteristic is graduated as required by the standard DIN EN 50291: at high CO levels the alarm is triggered quickly, at lower concentrations it is delayed. This minimises false alarms while reliably detecting gradual poisoning. The delay times only start when the sensor has detected an elevated concentration for longer than 30 seconds.
Where do I mount the sensor?
At nose height, where CO is inhaled first, and as close as possible to the combustion appliance to be monitored or to the flue, chimney or stack, but at least 30 cm below the ceiling. Not behind curtains or in cupboards, not directly above a cooker or sink, and not next to doors, windows, ventilation, fans or air conditioning.
Can the warning unit remain outside the monitored room?
Yes. The sensor cable can be routed through a wall opening (Ø 13 mm). This way the plug-in unit remains outside while the sensor is in the room to be monitored.
How long does it take until the GX-C3pro is ready for operation?
After plugging in, the LED on the plug-in unit lights up red briefly, then the green LED lights up on both units. After a sensor warm-up time of approx. 5 minutes the system is ready for operation.
The unit triggers an alarm immediately after plugging in. Is it defective?
Not necessarily. After long storage or moisture during transport, an alarm may be triggered immediately after the warm-up period and the LED will flash red. Briefly disconnect the GX-C3pro from the mains and restart the warm-up period. This may be necessary up to three times.
How do I re-enable the GX-C3pro after an alarm?
First ventilate the room thoroughly and have the cause eliminated. After successful ventilation the GX-C3pro is reset by briefly unplugging and re-plugging. Power to the unit’s socket is only released again when the measured CO concentration has fallen sufficiently. During the alarm itself the warning unit must not be unplugged.
How do I test the function?
Press the TEST button on the sensor. This checks the LEDs, the sounder and the shut-off function. The sensor itself can only be tested with CO gas, as the GX-C3pro responds exclusively to CO. In addition, intelligent software regularly performs automatic self-tests on the sensor.
What does the yellow LED on the sensor mean?
The yellow LED indicates a fault detected by the automatic self-test on the sensor. In this case the connected appliance is also switched off. A sensor cable that is not connected or not connected correctly is also treated as a fault.
What happens if the sensor cable is damaged or not connected correctly?
The cable break and plug-in protection detects this as a fault. A gas boiler connected to the plug-in unit is then switched off in any case.
Can I use the GX-C3pro in the bathroom?
Yes, also in bathrooms and other damp rooms as long as the moisture does not condense. Splash or rain water must be avoided.
What should I do in the event of a persistent or repeated alarm?
Contact your energy supply specialist or the fire brigade. Everyone must leave the house; the room or house should also be checked for any sources of fire, as carbon monoxide is also produced during the smoke development of fires.
What is the sensor inspection about?
The date (month/year) for the next sensor inspection is indicated on the sensor. Please then send the sensor to Elektrotechnik Schabus for factory inspection.
How long is the guarantee valid?
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 ALARM GX-C3pro?
Our support team in Germany will advise you free of charge on selection, installation and configuration.
CO ALARM GX-C3pro – Plug-in Carbon Monoxide Detector with External Sensor and Device Shutoff
The GX-C3pro is a CO detector for direct mains connection (230 V AC) equipped with an external sensor and integrated device shutoff. It reliably detects carbon monoxide (CO) and can automatically switch off connected devices in the event of an alarm.
Technical Data
- Operating voltage: 230 V AC, 50–60 Hz (±10%)
- Power consumption: approx. 2 VA
- Switching capacity: 1150 VA (700 W) / 5 A (changeover contact)
- Protection rating: IP 20
- Sound pressure (buzzer): 85–90 dB (at 1 m / 10 cm)
- Dimensions control unit (H×W×D): 121 × 57 × 28 mm
- Dimensions sensor (H×W×D): 88 × 58 × 38 mm
- Cable length: 2.5 m, 2×0.14 mm², white
- Service life: approx. 5–10 years, depending on environmental conditions
Environmental Conditions
- Operating temperature (sensor): -10 °C to +50 °C
- Storage temperature (sensor): -20 °C to +70 °C
- Relative humidity: 5–90 % RH, non-condensing
Sensor Technology
- Gas type: Carbon monoxide (CO)
- Trigger concentration: 30–300 ppm CO (according to DIN 50291)
- Sensor type: Electrochemical
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
