Short-range devices (SRD) are low-power radio-frequency transmitter devices used in telecommunication for the unidirectional or bidirectional transmission of information.

TWIG -lyhyen kantaman laitteet (SRD)

TWIG Short Range Devices (SRD)  include beacons, tags, buttons and sensors for locating and attendance monitoring purposes with TWIG personal alarm devices.

  TWIG Beacon  

The short range device (SRD) 

  TWIG Beacon Ex  

The short range device (SRD) 
sisäpaikannukseen Ex-ympäristössä

  TWIG Remote Button  

SRD button designed to be worn on the neck, on the wrist or in the pocket

  TWIG Tag  


  TWIG Door Sensor  

Lyhyen kantaman laitteet kulunvalvontaan

Lyhyen kantaman laitteen hyödyt yksintyöskentelyn turvaamisessa

Paikantaminen sisätiloissa

Locating persons in distress indoors is easy to realize with custom on-site beacons connected to compatible lone worker alarm devices.


Tags and door sensors are easy and fast to add to door openings for registration of persons carrying a SRD compatible personal alarm device.

Huomaamaton käyttö

Smaller than any personal alarm device, a wearable button is light and discreet to carry and helpful to remotely control a paired and nearby situated personal alarm device.

Indoor, outdoor and ATEX areas

TWIG Beacon locating devices are available for indoor and outdoor use as well as for explosive hazardous areas.

Modulaarinen järjestelmä

TWIG personal alarm device can operate with several TWIG short range devices (SRD) at the same time.

Soveltuvuus moniin tarpeisiin

Attendance monitoring, check-in / check-out points, logistics management and many other...

Hybridipaikannus SRD3-optiolla

TWIG personal alarm devices equipped with SRD3 option refine on-site beacon location coverage with Wi-Fi and BLE locations.

Helppo ottaa käyttöön

Tarvitset vain SRD-yhteensopivan TWIG-henkilöhälyttimen TWIG SRD-lisälaitteet kommunikoivat TWIG-henkilöhälyttimen SRD-vastaanottimen kanssa kaksisuuntaisen RF-linkin kautta 869 MHz ISM –taajuudella.