An alarm annunciator is a dedicated monitoring device designed to provide clear, reliable, and immediate indication of abnormal conditions in industrial and power systems. It continuously supervises multiple input channels and, upon detecting a fault, activates visual indicators—such as LED display windows—and audible alarms like buzzers to alert operators. Advanced models also offer RS-485 communication with Modbus-RTU protocol, enabling seamless integration into broader SCADA or automation systems for centralized monitoring and control.
Top 14 alarm annunciator manufacturer in the world
Nowadays, there are many alarm annunciator manufacturers. Here is a list of alarm annunciator manufacturers in the following:
Blue Jay annunciator- Fault Annunciator – Blue Jay
Blue Jay specializes in industrial automation and power protection. Its Fault Annunciator products are renowned for their reliability and flexible configuration, and are widely used in power, petrochemical, water treatment, and industrial control applications. The devices support 4 to 16 inputs and feature clear LED indication and programmable alarm logic (flash, acknowledge, and reset). They provide visual and audible alarms when an anomaly occurs, helping maintenance personnel quickly locate the fault.
The fault annunciator also feature an integrated RS-485 interface and support the Modbus-RTU protocol, enabling seamless integration with PLC, DCS, SCADA, and other systems, enabling remote monitoring and centralized management, improving operational efficiency and system security.
omniflex annunciator
Omniflex offers the industry-certified Omni series of alarms, covering a full range of needs, from compact to large-scale systems. Whether space is limited in a small control cabinet or a large alarm system with hundreds or thousands of alarm points, the Omni series offers flexible configuration options to meet critical applications in power, petrochemical, and industrial control.
This series features high reliability, modular design, and international certifications. It supports multi-point expansion, logical linkage, and remote display, and operates reliably even in explosion-proof and hazardous environments. With simple and intuitive operation and flexible integration capabilities, Omniflex alarms help customers easily implement security monitoring, rapid response, and system upgrades.
Espan annunciator
ESPAN offers a complete range of alarm systems from ESPAN01 to ESPAN04, suitable for small modular setups to large industrial control panels. All models feature bright LED displays, configurable audible and visual alarms, and reliable alarm logic for rapid fault indication. The ESPAN01 series is modular for easy maintenance, while ESPAN02 is ideal for standard switchgear and control cabinets.
ESPAN03 and ESPAN04 support larger systems with 8–20 channels, providing flexible alarm solutions for diverse industrial applications. All series offer confirmation/reset functions and rugged panel designs, making them widely used in power, petrochemical, water treatment, and other critical industries for effective safety monitoring and fault management.
GIC alarm annunciator
GIC India’s alarm annunciators offer 2–48 inputs with RS-485 Modbus support for integration with PLCs and SCADA systems. Featuring replaceable LEDs, power-failure detection, six ISA alarm sequences, and a 90 dB buzzer, they provide clear, reliable notifications.
Widely used in power, petrochemical, and water treatment industries, GIC alarms suit high-voltage switchgear, distribution boards, and control panels. Their modular design and flexible channels ensure scalable installation and maintenance, meeting CE and RoHS standards.
Apex annunciator
Apex Automation offers a diverse range of alarm solutions, including modular systems, compact panels, and economical optical display units. Its product line, including the AIS750, AIC400, AI7525, AIWR, and L4040 optical display boxes, meets diverse alarm needs, from small control cabinets to large industrial systems. Whether it’s critical alarm monitoring, flexible parameter configuration, or integrated displays in confined spaces, Apex alarms provide reliable and easy-to-use solutions.
This product series, with its core strengths of high reliability, modular design, and easy maintainability, supports operational functions such as acknowledgement, reset, silencing, and testing, and is adaptable to a variety of industrial environments. With a wide range of models and flexible application scenarios, Apex alarms are widely used in industrial automation, power, energy, and manufacturing, providing customers with an efficient and intuitive alarm management experience.
Abb annunciator
ABB offers high-reliability digital alarms, including the 16-channel SACO 16D1 and high-end SACO 64D4, for real-time fault monitoring in power and industrial systems. Featuring modular design, self-monitoring, and event logging, they ensure dependable operation in harsh environments.
These alarms support network integration with control systems, remote terminals, and printers, and provide audible/visual alerts with programmable acknowledgement/reset functions, making them ideal for power, petrochemical, and metallurgical industries.
Eaton annunciator
Eaton offers advanced process alarm systems, ranging from single audible and visual alarms to complete plant-wide monitoring systems. These include the MTL 725, MTL 725B, MTL UC625, and MTL P825, along with AMS alarm management software. These products are widely used in the oil, gas, power, and chemical industries.
These alarm annunciators utilize CANBUS® communication and multiple redundancy designs, offering high reliability, flexibility, and ease of use. They feature multi-channel inputs, LED displays, and event logging, supporting real-time monitoring and data management to ensure operational safety and stable equipment operation.
Selco annunciator
SELCO provides efficient and reliable alarm monitoring equipment for a wide range of applications in industries such as power, marine, and oil and gas. Our product range includes 6- to 20-channel digital panels and LED indicators. These panels support MODBUS-RTU communication, feature multi-color LED displays, and include alarm relays. Their modular design allows for scalability to large systems, enabling both local and remote alarm management.
Dold fault annunciator
DOLD offers a comprehensive range of fault annunciators suitable for various industrial applications, including power generation, automation, and building systems. Their INFOMASTER series provides modular solutions with alarm inputs ranging from 3 to 160, supporting both energized and de-energized trip configurations.
These systems feature visual indicators such as LED displays and text signals, along with optional audible alarms, to promptly alert operators to faults. The modular design allows for scalability, making them ideal for both small machines and large-scale systems.
Datakom annunciator
Datakom offers a variety of high-performance alarms suitable for power, automation, and critical infrastructure monitoring. Its DKM-0208 and DKM-0224 series support 8 and 24 alarm inputs, respectively, and feature a dual-color LED display, a built-in buzzer, and three relay outputs (rated at 5A) for audible and visual alarms, internal fault indication, and other functions. These devices support MODBUS RTU communication protocol and are resistant to interference, making them suitable for high-noise environments.
In addition, Datakom’s alarm annunciators feature front-panel buttons for alarm acknowledgement, reset, and self-test. Configuration is accomplished via jumpers or DIP switches, and some models support additional settings via the front panel or programming software. Their modular design makes them easy to install and maintain, making them widely applicable in applications such as generator sets, power distribution systems, and industrial control panels.
EES annunciator
EES (Elektra Elektronik GmbH & Co.) is a German company providing high-quality fault alarm and monitoring equipment for power, industrial, and infrastructure applications. Their portfolio ranges from simple panel-mounted alarms to networked systems, supporting Modbus, IEC 60870-5-101/104, and IEC 61850 interfaces.
Featuring modular design, flexible I/O, and easy installation, EES alarms suit small control panels to large power systems. LAB 2.0 offers 8–48 LED channels, BSM provides configurable 8–48 channel alarms, and USM supports advanced protocols for system connectivity.
Arcteq annunciator
Arcteq offers advanced alarm indication devices for a wide range of applications in substations and industrial environments. Its AQ-S214 supports up to 64 digital alarms and features customizable LED indicators, relay outputs, and six I/O expansion slots. Compatible with communication protocols such as IEC 61850, Modbus, and DNP3, it facilitates integration with protection and control systems.
These alarms feature both local HMI display and remote communication capabilities, enabling real-time alarm management and system expansion. The AQ-S254, for example, can also function as a multi-function IED, expanding I/O and alarm outputs to enhance power system monitoring and safety.
Qualitrol annunciator
The Betalarm 4 is a modular, cost-effective annunciator supporting up to 256 alarm points with selectable window sizes, colors, and ANSI/ISA-standard sequences. Features like first-out grouping, auto-mute/acknowledge, flexible relay outputs, and a no-master-module design ensure adaptability and high reliability.
It supports 24–250 VDC/110 VAC power, offers NEMA enclosures for panel or rack mounting, and simplifies setup with front access, plug-in LEDs, user-printable legends, and optional tropicalization for harsh environments.
Conclusion
When selecting an alarm annunciator manufacturer, key factors include input capacity, communication protocols, modularity, and industry certifications. From Blue Jay’s Modbus-ready solutions to ABB’s SACO series, each manufacturer brings unique strengths. Whether for compact panels or plant-wide networks, these top 14 providers ensure reliable fault monitoring, operational safety, and peace of mind in mission-critical industries.
