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TWIG One - Personal Alarm Device for Lone Worker Safety

Lone Worker Safety and Alarm Systems

TWIG One Lone Worker Safety Tracking Communication and Man-Down Device

TWIG One and TWIG One-Ex, a safety, communication, and alarm device optimised for lone workers

TWIG One, is a personal alarm device engineered to ensure the safety of lone workers, delivering effective performance in noisy and hazardous industrial environments. With its advanced communication features, robust construction, and user-friendly interface, it enables lone worker monitoring and prompt emergency response.

Monitoring lone working personnel minimises workplace risks and enables prompt response in emergencies. Ensuring the safety of workers, particularly in hazardous industrial environments, is vital for preventing workplace incidents and severe injuries. With its advanced tracking and communication features, TWIG One enables immediate communication when emergency assistance is required. Thanks to GPS, GNSS, and Wi-Fi-based tracking technologies, workers can be rapidly located indoors or outdoors.

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Optimum Alarm Device for Industrial Use
Advantages of Monitoring Lone Working Personnel
International Lone Worker Safety Standards

TWIG One satisfies the highest safety standards applied worldwide for lone workers. For example, lone worker safety requirements set by the HSE (Health and Safety Executive) in the United Kingdom and the WHO (World Health Organization) mandate regular monitoring of lone workers and the provision of rapid assistance in emergencies. TWIG One is an instrument developed in conformity with such standards, aimed at raising worker safety at an international level.

Advanced Communication Capabilities and Location Tracking

TWIG One provides an ideal solution for safeguarding lone working personnel and communicating rapidly during emergencies. With advanced communication and location tracking technologies, you have confidence that your workforce remains secure across industrial sites.

Product Specifications

  • Emergency Communication
    The device provides fast and reliable connectivity through various communication channels, including 2G/3G/4G*, VoIP calls, and data transmission over Wi-Fi*. Lone workers can transmit pre-programmed messages or raise an alert for assistance with a single button press.

  • Lone Worker Safety:
    With the ManDown function, the device automatically transmits an alarm if the user falls, remains motionless, or assumes an orientation indicating incapacitation. The Amber Alert provides heightened monitoring in hazardous situations.

  • Location Tracking:
    TWIG One can determine personnel location indoors and outdoors using GPS, GNSS, and Wi-Fi-based positioning technologies. Attendance logging using NFC tags provides task tracking.

  • Durable and Ergonomic:
    The device's lightweight and easily portable build allows workers to carry it comfortably. Furthermore, its robust SIM card slot and user-friendly interface withstand demanding conditions.

  • Long-Lasting and Sustainable:
    TWIG One can be managed remotely and kept continuously up to date via software updates. It is compatible with earlier TWIG models. The product is engineered to operate for many years without requiring additional infrastructure.

Product Documents


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Technical Specifications

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Key Features - Fall Detection (Worker)
- Device Drop Detection
- No-Motion (Man-Down) Detection
- Emergency SOS Alarm (Manual Latch Trigger)
- Worker Check-In (timed)
- Emergency Voice Calling
- Receiving SMS During Emergencies, Including GPS Location Information

- With Optional Data Package: Real-Time Location Information via GPS

- With Optional Data Package: Real-Time Tracking on Map via WEB
User Notification Audible, visual, and vibrating alarms; device status and warning LEDs
Connectivity Features GSM/GPRS/EDGE: Dual band 900/1800 MHz • UMTS/HSPA+: Dual band 900 (BdVIII) / 2100MHz (BdI) • LTE (VoLTE not supported): Penta band 700 (Bd28) / 800 (Bd20) / 900 (Bd8) / 1800 (Bd3) / 2100 MHz (Bd1) • Built-in GSM, SRD*, GNSS, WiFi*, BLE*, NFC* antennas • Dual-microphone speakerphones
Software Updates Available, Free of charge. (Please enquire separately for optional paid data-plan service)
Battery 1350mAh Li-ion Rechargeable Battery, with reporting once per hour per day 9-day battery life
Safety Classification (for -Ex model) SAR, RoHS, CE, RCM
IECEx: Ex ia IIC T4 Ga
ATEX: Ex ia IIC T4 Ga CE II 1 G (Suitable for use in hazardous/explosive atmospheres)

Please contact us for other certifications.
Protection Rating and Operating Temperature IP67 Ingress Protection (resistant to water splashes, rain, and dust), -20°C to +50°C
Dimensions and Weight 102mm x 49mm x 20mm, Approx. 90g - including battery
Standard Accessories TWIG Point Subscription, PC Configurator Application, and USB Charging Unit
Optional Accessories Charging Dock Station, Belt Clip (included as standard in quotation), 24/7 Monitoring-Data Service, Location Beacon (Indoor Location Transponder), TWIG Remote Button, TWIG Door Sensor; other optional accessories can be verified in the brochure above.

Worker Safety and Standards Compliance

In a lone worker solution, the device alone is not sufficient; the alarm protocol, call cascade, positioning, communication coverage, shift/check-in procedure, and monitoring centre must be engineered together. In projects requiring explosive atmosphere compliance, the manufacturer's ATEX/IECEx certified TWIG One Ex variant should be evaluated instead of the standard TWIG One.

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Notice: The technical information, product specifications and images on this page are based on manufacturer publications. The manufacturer may change specifications without notice. For current specifications or assistance in selecting a suitable product for your application, please contact NOVEL at info@novel.com.tr .

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