An alert system includes a bladder having an interior area to hold a gas or a liquid; a control system in communication with the bladder; an alert device in communication with the bladder; pressure applied to the bladder causes the gas or the liquid to pass to the control system; and the gas or the liquid causes the alert device to provide an alert based on a command from the control system.
1. An alert system comprising:
a bladder having an interior area configured to hold a gas or a liquid;
a control system in communication with the bladder;
a horn in communication with the bladder;
wherein the bladder is located by or on the approach to a hazardous area;
wherein pressure applied to the bladder causes the gas or the liquid to pass to the control system; and
wherein the gas or the liquid causes the horn to create an alert based on a command from the control system.
2. The system of claim 1 , further comprising:
a housing at least partially enclosing the bladder.
3. The system of claim 1 , wherein the control system is an electrical device configured to receive the gas or the liquid to create the command.
4. The system of claim 1 , wherein the control system and the horn are in wireless communication.