Abstract: An anti-ligature alarm device, comprises a sensing unit and a control unit. The sensing unit detects an external force when the external force is applied to the sensing unit and also transmits a signal indicating an alarm condition. The control unit comprises a receiver which receives the signal on detection of the external force. The sensing unit also includes a power source and a controller and the sensing unit and control unit are wirelessly paired to each other. The sensing unit also comprises a boost module which maintains a voltage input from the power source to the controller. The control unit is wirelessly networked to an alert device and the anti-ligature alarm device further includes a pairing device which is used to pair the sensing unit and the control unit.