Man Down alarm system is a sensor based aid to launching emergency cycle that makes automatic call and sends position to predefined numbers in case the user is unable to trigger alarm manually.

Read more about TWIG ManDown alarm on: https://www.twigcom.com/page/mandown-alarm-for-lone-workers

TWIG personal alarm devices support Man Down alarm triggered by 4 independent alert triggers: device orientation, non-movement, free fall and impact.

Alert is launched when predefined parameters are met. In order to minimize false alarms or missing alarms, the Man Down settings need to be carefully matched with the usage scenario and environment. The user needs to be trained on Man Down function and also on understanding its limitations.

Man Down alarm triggered by falling AND no movement

Horizontal + Motion Sensitivity Enabled: TWIG SOS cycle is launched when device main axis orientation deviates from absolute upright position more than Tilt Angle (in degrees), AND detected device movement (acceleration) falls below a threshold value defined by Motion Sensitivity.

Vertical + Motion Sensitivity Enabled : Man Down alert launches TWIG SOS cycle when device beam axis orientation deviates from absolute upright position more than Tilt Angle (in degrees), AND detected device movement (acceleration) falls below a threshold value defined by Motion Sensitivity.

Man Down alert is triggered when both rules are met:
- device main or beam axis orientation deviates from absolute upright position and

- device movement falls below a threshold value defined by motion sensitivity.

Man Down+ alarm triggered by falling OR no movement

TWIG personal alarms supporting Man Down+ feature alerts the ARC also in situations where the user is not moving (e.g. because of unconsciousness) but the personal alarm is not deviating enough from the absolute tilt angle (e.g. where fainting doesn’t include falling and change in device orientation axis). In situation of no movement SOS cycle is launched when detected device movement (acceleration) falls below a threshold value defined by Motion Sensitivity. Device orientation has no effect.

Man Down++ alarm triggered by free fall or impact
The TWIG personal alarms supporting Man Down++ feature alerts the ARC also in situations of a sudden impact or free falling.