Product Overview
The ANWETECH AT-GSM01 4G Auto Dialer is designed to provide remote alarm notification for fire alarm systems, security alarm systems and industrial monitoring equipment. When the dialer receives an alarm trigger signal, it can automatically send SMS alarm messages or dial preset telephone numbers to notify responsible personnel.
The device supports multiple triggering methods, including normally open contact, normally closed contact and DC12V voltage signal input. It can be connected to fire alarm control panels, alarm relay outputs, security control panels or equipment fault output terminals.
With voice recording, SMS alarm function and programmable telephone numbers, AT-GSM01 is a practical alarm communication device for projects where remote notification is required but a full monitoring platform is not available.
Key Features
4G LTE alarm communication
Supports voice call alarm and SMS alarm notification
Suitable for fire alarm, security alarm and equipment fault alarm applications
Supports N.O., N.C. and DC12V voltage trigger input
Programmable alarm receiving telephone numbers
Supports 4 or 8 groups of phone numbers depending on configuration
Maximum 16 digits for each phone number group
Built-in microphone and speaker for voice recording and playback
Supports up to 20 seconds voice recording
Alarm phone numbers and voice message are saved after power failure
4-digit private password protection
Default password: 0911
LED display for programming and status indication
4G module indicator for SIM/network status
Programmable alarm dialing repeat times
Factory reset and password recovery function
Compact design for integration with alarm control systems
Technical Specifications
Product Model: AT-GSM01
Product Type: 4G Auto Dialer
Operating Voltage: DC11V to DC15V
Typical Operating Voltage: DC12V
Static Current: 20mA at DC12V
Operating Current: 80mA at DC12V
Communication Network: 4G LTE
Frequency Band:
TDD-LTE B38 / B39 / B40 / B41
FDD-LTE B1-B5 / B7 / B8 / B12 / B13 / B18-B20 / B25 / B26 / B28 / B66
Alarm Methods: Voice call alarm / SMS alarm
Triggering Modes: N.C., N.O. and DC12V voltage signal
Trigger Duration: Programmable, default 0.5s
Voice Recording Time: Up to 20 seconds
Telephone Number Storage: 4 or 8 groups depending on version
Maximum Digits per Number: 16 digits
Password Protection: 4-digit private code
Default Password: 0911
SIM Card: Required
SMS Center Number: Automatic acquisition or manual setting
Display: 7-segment LED display
Network Status Indicator: 4G module indicator
Power Failure Memory: Phone numbers and voice message retained
Wiring / Output / Relay
Power Input
Red wire: DC12V positive
Black wire: DC12V negative
Trigger Input T1
Yellow wire and black wire can be used for N.O. or N.C. dry contact trigger.
For DC12V voltage trigger, yellow wire connects to positive and black wire connects to negative.
Trigger Input T2
Green wire and black wire can be used for N.O. or N.C. dry contact trigger.
For DC12V voltage trigger, green wire connects to positive and black wire connects to negative.
Note: T2 input is optional and may be available for customized or ODM versions.
Triggering Methods
N.O. Trigger: Alarm is activated when the normally open contact closes.
N.C. Trigger: Alarm is activated when the normally closed contact opens.
Voltage Trigger: Alarm is activated when DC12V signal is applied to the trigger input.
Application Scenarios
Fire alarm control panel remote alarm notification
Conventional fire alarm panel alarm output monitoring
Addressable fire alarm panel relay output monitoring
Security alarm system notification
Pump room alarm and equipment fault alarm notification
Electrical room and distribution cabinet monitoring
Warehouse alarm notification
Industrial machine fault alarm notification
Remote unmanned site alarm communication
Small building alarm system upgrade
Facility maintenance alarm notification
Alarm relay output to mobile phone notification
FAQ
Q1: What is AT-GSM01 used for?
A1: AT-GSM01 is used to send SMS or voice call alarm notifications when an external alarm signal is triggered. It can be used with fire alarm panels, security alarm systems, equipment fault outputs and remote monitoring systems.
Q2: Can AT-GSM01 work with a fire alarm control panel?
A2: Yes. It can be connected to the alarm relay output or signal output of a fire alarm control panel. When the panel provides an alarm trigger signal, the auto dialer can send SMS or make alarm calls.
Q3: Does AT-GSM01 support both SMS and voice alarm?
A3: Yes. The device supports SMS alarm and voice call alarm. Users can program the required alarm method for each phone number.
Q4: What trigger inputs does AT-GSM01 support?
A4: AT-GSM01 supports normally open contact, normally closed contact and DC12V voltage trigger input.
Q5: How many phone numbers can be stored?
A5: The device can store 4 or 8 groups of phone numbers depending on the product configuration. Each number can be up to 16 digits.
Q6: Will the programmed phone numbers be lost after power failure?
A6: No. The programmed phone numbers and recorded voice message can be saved even after power is turned off.
Q7: Does the device require a SIM card?
A7: Yes. A SIM card is required for SMS and voice call alarm communication.
Q8: Can users record their own voice alarm message?
A8: Yes. AT-GSM01 supports up to 20 seconds of voice recording.
Q9: What power supply does AT-GSM01 require?
A9: The device operates with DC11V to DC15V power supply, typically DC12V.
Q10: Is AT-GSM01 suitable for remote sites?
A10: Yes. It is suitable for remote equipment rooms, pump rooms, electrical rooms, warehouses and unmanned sites where alarm information needs to be sent to responsible personnel by SMS or voice call.
