Instant help when every second counts

Personal alarm system designed for uniformed services and security personnel. Simple, reliable, ready to operate in any conditions.

Get in touch Explore the system

Developed in cooperation with

Prof. Brunon Hołyst, DSc, Dr h.c.multJacek Olejnik, MSc Eng.Lt. Col. (Ret.) Michał GulaProf. Piotr Bilski, DSc Eng.

60%

of units without a personal alarm system

Thousands of officers work every day without an effective alarm system

Current solutions are expensive or require extensive infrastructure. Directive No. 87/2025 of the Director General of the Prison Service mandates the implementation of modern personal safety systems.

The Device

Compact alarm transmitter designed for wearing on a uniform belt.

SOS Button

120 dB alarm

120 dB Siren

Acoustic buzzer

Silent alarm

Discreet call

Mounting system

Belt loops and clip

Drag to rotate

75×68×40 mm · IP67 · BLE 5.0 · 2× ER14505 · 5 years battery

Key features

Loud alarm at 120 dB. Press and hold for 1.5 seconds — siren and signal to the control room.

Built-in acoustic buzzer comparable to an alarm siren. Active until reset.

Discreet call for help without the siren. Vibration confirmation. Ideal for silent escalation.

Belt loops and optional screw clip. Secure attachment to duty belt or equipment.

View specifications

The Device

Compact alarm transmitter designed for wearing on a uniform belt.

SOS Button

120 dB alarm

120 dB Siren

Acoustic buzzer

Silent alarm

Discreet call

Mounting system

Belt loops and clip

Drag to rotate

75×68×40 mm · IP67 · BLE 5.0 · 2× ER14505 · 5 years battery

Key features

Loud alarm at 120 dB. Press and hold for 1.5 seconds — siren and signal to the control room.

Built-in acoustic buzzer comparable to an alarm siren. Active until reset.

Discreet call for help without the siren. Vibration confirmation. Ideal for silent escalation.

Belt loops and optional screw clip. Secure attachment to duty belt or equipment.

View specifications

See other products

Discover the other devices in the OSA ecosystem.

Przycisk SOS

Stationary SOS button with buzzer

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Beacon Osobisty

Miniature personal beacon with SOS button.

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Opaska Alarmowa

Alarm transmitter in the form of a wrist bracelet with a dedicated SOS button.

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Gateway

Communication gateway connecting BLE network to the monitoring system

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Repeater

BLE range extender relaying the alarm signal across the entire facility

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Syrena Alarmowa

Acoustic and optical alarm signaling device

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Why OSA?

A system designed from the ground up for the specifics of uniformed service.

5 years

no charging

Ultra Long Battery Life technology eliminates the need for charging and battery replacement throughout the entire service life.

120 dB

alarm siren

Built-in buzzer comparable in power to an alarm siren. Immediate warning to the surroundings about a threat.

IP67

service conditions

Waterproof, dust and shock resistant. Designed for extreme field working conditions.

No network infrastructure

No LAN, Wi-Fi or fiber optics required — communication based on energy-efficient BLE 5.0.

Unlimited scalability

From a single department to a multi-facility unit — the system grows without device limits and without replacing infrastructure.

How does it work?

From pressing the button to dispatching help — in seconds.

Alarm

The officer presses the SOS button on the transmitter. The alarm signal is activated immediately.

Transmission

The transmitter sends the alarm signal via BLE 5.0 to the nearest repeaters in range.

Network

Repeaters relay the signal in cascade through the device mesh, covering the entire facility.

System

The gateway forwards the alarm to the monitoring system. The operator sees an alert with exact location on the dashboard.

Response

The response team receives the information and immediately dispatches help to the indicated location.

How does it work?

From pressing the button to dispatching help — in seconds.

Alarm

The officer presses the SOS button on the transmitter. The alarm signal is activated immediately.

Transmission

The transmitter sends the alarm signal via BLE 5.0 to the nearest repeaters in range.

Network

Repeaters relay the signal in cascade through the device mesh, covering the entire facility.

System

The gateway forwards the alarm to the monitoring system. The operator sees an alert with exact location on the dashboard.

Response

The response team receives the information and immediately dispatches help to the indicated location.

Who is it for?

OSA meets the needs of various services and industries, wherever personnel safety is a priority.

Prison Service

Educators, psychologists, therapists and officers in direct contact with inmates. OSA provides an instant call for help in threatening situations.

Police

Interventions, transport of detainees, operational work. A personal alarm when standard communication methods may fail.

Security companies

Protection of high-risk facilities — shopping centers, industrial sites, mass events. Effective alarm without extensive infrastructure.

Hospitals & ER

Medical staff in psychiatric wards and emergency rooms — exposed to patient aggression. Discreet alarm without escalating the situation.

Partners and cooperation

The OSA system is the result of cooperation with leading scientific institutions and proven technology partners.

Let's talk about your team's safety

Want to implement the OSA system in your facility? Contact us — we'll answer all your questions and prepare an offer tailored to your needs.

biuro@osa-jas.pl

+48 534 624 521

ul. Tomcia Palucha 14/47, 02-495 Warsaw