What is Pneumatic binary signal?

A pneumatic binary signal refers to a method of communication using pressurized air to represent binary states, typically "on" or "off." In this system, specific air pressure levels or the presence/absence of air flow can indicate different states, similar to how electrical signals operate in digital systems. Pneumatic binary signaling is often used in automation and control systems, particularly in environments where electrical components may be unsuitable due to hazards like dust or moisture. This method allows for reliable and safe signaling in various industrial applications.