Maintenance work is carried out in all sectors and workplaces, conducted generally alongside a running process, in close contact with machinery. Work consists of non-routine tasks outside normal hours and under time pressure. A greater risk of human error increases the accident risk.

Lone working risks in maintenance


Sparking caused by electrical equipment like switches and motors may cause burning when in contact with live parts of the worker.

Electric shocks

Engineers and electricians dealing with electricity directly are exposed to electrical current and risk of electric shocks causing pain or trauma.

Human errors

Complicated machinery involving disassembly and reassembly tasks outside routines, normal working hours and under time pressure increase the risk of human error and accident.

TWIG advantages for maintenance

Amber alert

When entering a risky situation, the Amber Alert timer can be adjusted to trigger an alert at predefined time intervals.

Power for noisy environments

The integrated high-power speakerphone boosts two-way voice communications. A powerful vibrating alarm and alarm tones help to sense pre-alarms and incoming communications.

ManDown alert

The automatic ManDown function can trigger alert if user is unconscious or unable to alert help.

TWIG personal safety devices for maintenance workers


  • The wearable 4G personal safety device and five wearing options including wrist band, belt clip and carabiner hook.


  • Optimised for heavy duty operation in noisy environments.
  • Choice of four Man-Down triggers including slip and fall.
  • Fully waterproof.


  • Intrinsically safe personal alarm device optimised for lone worker protection in potentially explosive environments.


  • Fully functioned yet with simple user interface.
  • One button action with four Man-Down triggers.