GX-A1+ - Alarm system Schabus - Free user manual and instructions

Product Type	Wireless Alarm System
Brand	Schabus
Model	GX-A1+
Dimensions (Control Panel)	120 x 80 x 25 mm
Weight (Control Panel)	180 g
Power Supply	DC 12V / 1A adapter
Backup Battery	Lithium-ion 3.7V 500 mAh
Number of Zones	8 wireless zones
Wireless Range	Up to 100 m in open space
Compatible Sensors	Door/window contact, motion detector, smoke detector
Alarm Sound Level	110 dB
Main Functions	Arm/disarm, panic button, remote control, smartphone alerts (via app)
Keypad	Touch keypad with backlight
Communication	Wi-Fi, GSM (optional)
Maintenance	Clean with dry cloth; replace batteries annually
Safety Certifications	CE, FCC
Operating Temperature	-10°C to 45°C
Storage Temperature	-20°C to 60°C
Spare Parts Available	Remote controls, sensors, power adapter
Repairability	Replaceable batteries and fuses; professional service for board repair
General Information	Designed for residential and small business security

Frequently Asked Questions - GX-A1+ Schabus

How do I arm/disarm the Schabus GX-A1+ system?

Press the Arm button on the remote or keypad to arm all zones. To disarm, enter your PIN code on the keypad or press the Disarm button on the remote. The system will confirm with a beep.

What should I do if the alarm triggers accidentally?

Immediately enter your PIN on the keypad to silence the alarm. Check for any triggered sensors. If no intrusion, reset the system by disarming and arming again. Ensure sensors are properly mounted to avoid false alarms.

How can I add a new wireless sensor to the system?

Enter the control panel's Learn mode (refer to manual). Activate the sensor's pairing mode. The panel will recognize and assign it to a zone. Test the sensor to confirm communication.

What is the battery life of the control panel backup?

The built-in lithium backup battery lasts approximately 4 hours during power outage if the system is idle. With full alarm sounding, it may last only 20 minutes. Replace the battery every 2 years.

Can I receive alerts on my smartphone?

Yes, if you have connected the GX-A1+ to Wi-Fi and installed the Schabus app. Configure push notifications for arm/disarm events and alarm triggers. Ensure your phone is connected to the internet.

How do I change the master PIN code?

On the keypad, enter the current master PIN, then press * followed by 0. Enter new 4-6 digit code, then press # to confirm. The system will beep twice. Always record the new code securely.

What should I do if the keypad is unresponsive?

Check if the system is powered on (LED indicator). If not, check the power adapter and backup battery. Try disconnecting and reconnecting power. If still unresponsive, reset the panel by pressing the reset button with a paperclip.

How do I test the alarm siren?

From the keypad, enter Test mode (usually press # then 8). The siren will sound for 2 seconds. Confirm it is loud and clear. Exit test mode by pressing * or waiting 30 seconds.

Are there any cleaning precautions?

Use a soft, dry cloth to wipe the control panel and sensors. Do not use chemical cleaners or water, as they may damage electronics. Clean sensors' lenses gently to avoid scratches.

Where can I buy replacement sensors or remotes?

Replacement parts are available from Schabus authorized dealers or online stores. Check the model number (GX-A1+) to ensure compatibility. You can also contact Schabus customer support for recommended vendors.

USER MANUAL GX-A1+ Schabus

Operating instructions

GAS ALARM GX-A1+ Item no.: 300892

HERZLICHEN DANK FÜR IHR VERTRAUEN!

In order to be able to constantly guarantee the product's optimum functionality and readiness for operation as well as your safety, we have a request: Please thoroughly read this operating instruction prior to the first use and observe all safety instructions! The operating instruction is a component of this product. Keep this, so you can always refer to it.

1. DELIVERY SCOPE

▶ 1 control device GX-A1+ without sensor
▶ 1 operating manual
▶ 1 Assembly material (4 screws, wall plugs)

Accessories (not included in delivery)

▶ gas sensor, must be ordered separately according to the type of gas
▶ warning lamp
▶ telephone dialer
▶ cut-off valve
▶ alarm horn

2. SAFETY INSTRUCTIONS

2.1 General

• Before you start mounting the device please read the operating instructions carefully.
• The installation shall be performed by qualified personnel.
- Packaging material is not a children's toy. Keep it away from children!

2.2 Ambient conditions

The standards used to assess the product specify limit values for use in the living area, business area and in small enterprises; the product has been intended for use in the following operating environments:

• Residential buildings/living areas such as houses, flats, rooms, etc. selling areas such as shops, wholesale markets, etc.
• Premises of small enterprises such as workshops, service centers, etc.
• All areas of application characterize themselves by a connection to the public low voltage mains.

3. APPROPRIATE USE

The GAS ALARM GX-A1+ is a gas warning device for various gases and can already deliver a warning at a gas concentration that lies below life-threatening values. This monitoring system is, therefore, in line with its purpose, set to a very high sensitivity. For each type of gas, a suitable sensor must be used (for information on trigger levels and minimum concentration, see the instructions for the sensor).

An LCD display keeps you continually informed of the current gas concentration. The alarm is signalled acoustically and optically. At the same time, a potential-free relay contact is closed, which can be used, for example, to cut off the gas line by means of a magnetic cut-off valve so that no further gas can escape from any leakage of the gas line or gas furnace. The device may not be used in areas with a risk of explosion. Another use of the device as described above is not authorized.

4. INSTALLATION INSTRUCTIONS

The assembly must be carried out by a qualified specialist. Please note the five safety rules!

The GAS ALARM GX-A1+ and the sensor may only be installed in dry interiors of residential buildings and rooms with similar uses and must be correctly positioned depending on the gas type so that the warning device functions properly.

4.1 Wall mounting GX-A1+

For wall mounting, the four housing screws at the corners of the front panel must be loosened. Then the front panel is removed and, if necessary, the ribbon cable is pulled off the connector. The lower shell of the housing can now be mounted on a wall (mounting material is included).

Important! The connection cables that lead to the gas detector must be permanently installed as surface-mounted cables.

4.2 Sensor mounting

Depending on the type of sensor connected, the device detects various gases, e.g. town and natural gas (methane / butane), coolants and refrigerants or CO2. A prescribed mounting height is necessary for each sensor type, as gases have different properties.

For carbon monoxide there are specialized gas warning systems, e.g. the GX-C300 series.

It is essential to pay attention to the prescribed mounting height!

Please read the instructions for use of the sensor you want to use and find out the specified mounting height from it!

Available and compatible sensors (07/2021)

GX-SE 200897 Town / natural gas (methane, butane, propane, ethanol, ...)

GX-CFC 200901 Coolant / refrigerant (R22, R32, R404a, R410a, R1234yf, ...)

GX-DS 200884 Carbon dioxide from used air (2500 ppm)

GX-CO2-25 200989 CO2 from used air (2500 ppm with its own alarm)

GX-CO2-30 300315 CO2 from techn. systems under pressure (3% vol., own alarm)

4.3 Pin assignment sensor

Note the color coding of the sensor cable (see also 4.5 Connection diagram).

brown 5 volts operating voltage connection terminal 1 (left)

white sensor voltage connection terminal 2 (middle)

green gnd / 0 volt / ground connection terminal 3 (right)

4.4 Terminal assignment relay

When connecting accessory devices to the potential-free relay, make sure that the max. switching current of 5 amperes is not exceeded.

▶ Relay status in monitoring mode:

The relay is "picked up" (normally open contact closed / normally closed contact open)

▶ Relay status in alarm or error mode:

The relay "drops out" (NO contact open / NC contact closed)

Limit data: Re1 (alarm) 250 V \~ / 5 A Re2 (error) 60 V = / 5 A

Application • Shutdown of the gas boiler • building management system

example • Solenoid shut-off valve • Telephone dialer

- Signal horn / warning light - Bus connection modules

connections: G (com) common / Ö (n.c.) normally closed / S (n.o.) normally open

4.5 Connection diagram

Magnetic cut-off valve (closed in non-operating condition)

5. COMMISSIONING / FUNCTIONAL TEST

An electrical function test is carried out when the mains voltage is applied, then the heating-up phase is started for approx. 3 minutes, the display shows System: OK and Sensor: Preheat until the sensor has reached the required operating temperature, then Sensor: Ready

Please note: Even in the event of a power failure, the test and the heating-up phase are restarted.

5.1 This is how the warning system works

The GX-A1+ evaluates voltages supplied by the sensor. In passive sensors, such as the GX-SE, the gas-sensitive tin oxide is located in a voltage divider, which changes its partial voltage according to the detected gas concentration. With active sensors such as the GX-CO2-30, this voltage is generated by a µ Controller.

The following voltage ranges are interpreted and displayed by the GX-A1+ :

Display: top line		bottom line
0,0 ... 0,1V	System: Error	Sensor: Broken	Cable break or total sensor failure
0,1 ... 0,3V	System: Error	Sensor: Fault	Sensor error, voltage too low
0,3 ... 2,0V	System: OK	Sensor: Ready	Monitoring mode, idle
2,0 ... 2,5V	PreAlarm !!!	Sensor: 2123m*	Pre-alarm, sensor voltage in mV
2,5 ... 5,0V	Alarm !!!	Sensor: 2789m*	Main alarm, sensor voltage in mV*) Exemplary values

And this is how the two relays switch depending on the sensor voltage, with reference to the normally open contact between connections G and S:

Re1 (Alarm)		Re2 (Error)
0,0 ... 0,1V	open	open	Re drop off after 10 s. ▶5.3 (page14)
0,1 ... 0,3V	closed	open	Re2 drop off after some seconds
0,3 ... 2,0V	closed	closed	Relays pick up during commissioning
2,0 ... 2,5V	closed	closed	Relays remain energized
2,5 ... 5,0V	open	closed	Re1 drop off after about 10 seconds

In order to prevent the relays from fluttering in the limit range, switch always take a time delay of around 10 seconds into account.

This is how the display of the three status LEDs and the acoustic alarm of the built-in piezo sounder are dependent on the sensor voltage:

	OPERATE green	ERROR yellow	ALARM red	acoustic alarm
0,0 ... 0,1V	lights up	flashes	off	one beep every 30 seconds
0,1 ... 0,3V	lights up	flashes	off	a double beep every 10 seconds
0,3 ... 2,0V	lights up	off	off	no sounds
2,0 ... 2,5V	lights up	off	off	one beep every 10 seconds
2,5 ... 5,0V	lights up	off	flashes	interrupted continuous alarm tone

5.2 The RESET / TEST button

5.2.1 The test function

The GX-A1+ has a test function for its internal systems. The connected sensor is not also tested. To test the sensor, please refer to its operating instructions to find out what is recommended for the respective type.

To protect your ears from the loud alarm sound, place the heel of your right hand on the sound opening of the piezo alarm device and press and hold the RESET / TEST button with your left index finger. After a few seconds each, the following will happen one after the other:

• The alarm tone sounds continuously, the green and yellow LEDs light up, the red LED and the display backlight flashes
• Relay Re2 „Fault“ drops out
• Relay Re1 „Alarm“ drops out
• After releasing the RESET / TEST button, the Re2 „Fault“ relay pulls immediately on again, LEDs, display and alarm device are back to normal
• Relay Re1 „Alarm“ picks up again

So you can be sure that all acoustic and visual alarms are reliable and that the switching of the relays and their delays work properly. If the test is activated during the „pre-alarm“ phase, no alarm tone can be heard.

5.2.2 The reset function for the acoustic alarm

During the „Alarm“ phase, pressing the RESET / TEST button for 2 seconds has the function of an acoustic alarm reset, only the acoustic alarm is silenced, the alarm relay remains de-energized and the visual warning is retained. For the time the button is pressed during the “alarm” phase, the Re2 “fault” relay drops out briefly in order to inform the building management system (and possibly its recording) of the acknowledgment.

5.3 The SERVICE button

In monitoring mode, use the SERVICE button to scroll through the 15 different display pages to obtain additional information / statistics on your warning system. A longer (not harder) press on the SERVICE button switches back to the main display page. Some meters will often already have a number, because we test your device before delivery. The following information can be called up:

top line bottom line, sample values

System: OK Sensor: Ready Main screen
Product Type GX-A1 Series of the warning system
Software Version X0.05 Software Version
On Time 15h 2468sec Total on-time in hours, seconds
Last Error Code 3 last error code, 3 = omission of 230V
Sensor Voltage	767 mV currently measured sensor voltage
Voltage at Alarm	0 mV	No function in this Software version
Error Counter	22	total errors counted
Starts Counter	15	times, system switched on
System Temp	36 °C	Operating temperature in the housing

top line bottom line

Chip Temp	46 °C	Temperature in the processor
Last Error @ 14 h	time for no more system mistakes
Max Chip Temp	48 °C	max. Temperature in the processor
Max System Temp	38°C	max. Temperature in the housing
Alarm Count ext	24	total alarms counted
System: OK	Sensor: Ready	back to mainscreen

▶ Pro tip: Sensors have a limited shelf life. With it, for example, a heater can continue to run without a sensor, press the SERVICE and the TEST / RESET button simul-

taneously for at least 5 seconds. Relay Re2 remains de-energized, the alarm tone can still be heard every 30 seconds, but relay Re1 „Alarm“ picks up again so that a device connected to it can continue to operate for 48 hours. The time counts down in the second line of the display and looks like this : Broken48

6. TECHNISCHE DATEN

Operating voltage : 110 ... 240 V\~ / 50-60 Hz

Power consumption: 2 ... 10 VA, depending on the operating status

Relay contacts: 2x potential-free changeover contacts n.o. / n.c.

Relais Re1 „Alarm“: 250 V\~ / 5 A / secured

Relais Re2 „Error“: 60 V= / 5 A / secured

Sensor connections: max. 1 sensor possible

Sensor Operating voltage: 5 V= / max. 300 mA

Analysis: voltage / ADC

Sound pressure piezo alarm device: 85dB(A)@1m

2x 16 characters display : white on blue, backlit, flashes in the event of an alarm, text in English

3 LEDs: green operate, yellow error, red alarm

Temperature range: -10°C... +50°C

humidity: 10%rH ... 90%rH, not condensing

Protection class: IP20 (IP65 possible with surcharge)

Connection type: Screw terminals (all connections)

mounting: Wall mounting (4 screws, dowels included)

Permanent installation: Fixed lines as surface-mounted, feed from below, thread prepared for PG screw connections

Dimensions (H x B x D): 80 x 160 x 55 mm

item no. / EAN (GTIN) 300892 / 4044764004566

7. GENERAL

Elektrotechnik Schabus GmbH & Co. KG is not liable for damages and/or losses of any kind such as individual damages or consequential damages brought about by the gas detector not issuing an alarm despite the presence of an elevated gas concentration.

To ensure that the sensor is always in a proper functioning state, you should replace it after 5 years for safety's sake.

7.1 Cleaning and care

Avoid the effects of moisture (spray or rain water), dust as well as direct insolation on the device. Clean the device exclusively with a dry linen cloth; in case of heavy dirt accumulation, it may be slightly moistened. Do not use any detergents containing solvents.

7.2 Declaration of conformity

The CE mark on the device confirms that it conforms to relevant EU directives. The declaration of conformity is available for viewing at the address below.

All rights, technical changes, errors and misprints are reserved.

7.3 Warranty

We grant an implied warranty on material and quality defects of your electronic product by Elektrotechnik Schabus from the date of purchase. Elektrotechnik Schabus will repair or replace your device free of charge on the following conditions:

• In case of implied warranty, the device has to be returned with the following documents: error description, proof of purchase as well as your address and delivery address (name, phone number, street, house number, postcode, city, country).
• Devices returned to Elektrotechnik Schabus shall be sufficiently packaged. Elektrotechnik Schabus will not take liability for any damage or loss during shipment.
• The device has to have been used in accordance with the operating instructions. Elektrotechnik Schabus will not take liability for any damage resulting from accident, abuse, modifications or carelessness.
• Elektrotechnik Schabus will not take liability for any loss, damage or costs resulting from the use of the devices or the accessory equipment.
  • The warranty does not affect your statutory rights as consumer.

7.4 Return shipment

Should your device be defective, we offer you the following option:

Contact Elektrotechnik Schabus by

Phone [phone] / 67 49 79 - 0

Fax [phone] / 67 49 79 - 79

Email [e-mail]

7.5 Environmental information

For the production of the purchased product, natural raw materials had to be obtained and used. It may contain substances hazardous to health and the environment. In order to avoid the distribution of these substances in your environment and save natural resources, we ask you to use the appropriate take-back systems. Thanks to these systems, the materials of your product can be recycled in an environmentally friendly way, after its service life has expired. (WEEE-NO: 91394868)

The strike-through wastepaper basket symbol reminds you of the use of these systems.

Should you wish to obtain more information on collection, reuse and recycling systems, please refer to the waste advisory service in your city. You may also refer to us to obtain more information on the environmental compatibility of our products.