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

TWIG short range devices (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) 
for indoor location

  TWIG Beacon Ex  

The short range device (SRD) 
for indoor location in Ex areas

  TWIG Remote Button  

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

  TWIG Tag  

The attendance monitoring solution

  TWIG Door Sensor  

The short range device for doorways

Short range device benefits

Locating indoors

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

Attendance registration

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

Discreet to carry with

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.

Modular system

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

Suitable for multiple needs

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

Hybrid location with SRD3 option

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

Easy to take in use

All you need is a SRD compatible TWIG personal alarm device. TWIG short range devices communicate with a SRD transceiver in the personal alarm device, over a two-way 869 MHz ISM –band RF link.