Lone Worker Portable Tracking Unit - Mobil-i

Our lone worker tracking unit provides round the clock protection for your remote workers. The portable device is designed for people who could potentially find themselves in a threatening situation while working remotely. The tracker contains an SOS alert, optional fall alarm, speed sensing, and geo-fence capabilities.

The device can be monitored on our smartphone app MST Mobile and online on our MS Track Web platform. Recharging of the device is very straightforward via USB cable. The unit is in line with the HSE’s HSP:013:02 Policy for Lone Working.

Key Features

Alarm Button

A big alarm button can save your life in case of an emergency. Direct message sending via GPRS/SMS can be activated with a single press of the button.

Accelerometer & Gyroscope

Built-in accelerometer and gyroscope sensor for more accurate fall down trace data in order to avoid fake events.


Used to detect employees, elderly people and lone workers falling down. The device can monitor the users vertical or horizontal position without any button press and immediately activate an alarm if the configured position is changed.

Small Casing

New modern design boasts a big capacity battery – 800mAh. Dimensions are only 44x43x20mm.

Certified IP67 Case

The waterproof IP67 case design ensures increased protection against dust ingress and water.

Description & Specs

The Lone Worker Portable Tracking Unit from Mobil-i is an AUTONOMOUS personal tracker with GNSS, GSM, and Bluetooth connectivity. This mini tracker is designed for people, pets, car monitoring, employee control, sports events, and a range of other activities. IP67 waterproof case ensures outside usage in harsh conditions, moreover, a large battery‘s capacity expands application range where long battery lifetime is needed. In addition to that, it supports hands-free, firmware, and configuration update via Bluetooth.

Name Lone Worker Portable Tracking Unit – Mobil-i
Receiver 33 channel
Tracking sensitivity -165 dBM
Accuracy < 3 m
Hot start < 1 s
Warm start < 25 s
Cold start < 35 s
Technology GSM
2G bands Quad-band 850 / 900 / 1800 / 1900 MHz
Data transfer GPRS Multi-Slot Class 12 (up to 240 kbps), GPRS Mobile Station Class B
Data support SMS (text/data)
Charging voltage 5V DC
Battery 800 mAh Li-Ion battery (3.04 Wh)
Power consumption 1,5 mA (Ultra Deep Sleep), 3,5 mA (Deep Sleep), 4 mA (Online Sleep), 8 mA (GPS Sleep), 44 mA (nominal)
Specification 4.0 + LE
Supported peripherals Headset
Configurable buttons 2
GNSS antenna Internal High Gain
GSM antenna Internal High Gain
USB 2.0 Magnetic USB contact
LED indication 1 RGB LED
Memory 128MB internal flash memory
Physical specification
Dimensions 44 x 43 x 20 mm (L x W x H)
Weight 40 g
Operating environment
Operating temperature -25 °C to +55 °C
Storage temperature -40 °C to +70 °C
Operating humidity 5% to 95% non-condensing
Ingress Protection Rating IP67
Sensors Accelerometer,Gyroscope
Scenarios Over speeding, Man – down, Alarm, Auto Geofence, Manual Geofence, Action on call.
Sleep modes GPS Sleep, Online Deep Sleep, Deep Sleep, Ultra Deep Sleep
Configuration and firmware update FOTA Web, FOTA, FMB Configurator (USB, Blue-tooth), FMBT mobile application
SMS Configuration, Events, Debug
GPRS commands Configuration, Debug
Time Synchronization GPS, NITZ, NTP
Certification & Approvals
Regulatory CE/RED, SAR
Lone Worker device on MST Web
Lone Worker device on MST Mobile