Which of the following is NOT one of the types of signaling systems in fire safety?

In fire safety, signaling systems are categorized into several types that serve specific functions in the detection and notification of fires. The proprietary, remote station, and local signaling systems are all established types of fire alarm signaling systems recognized within the industry:

• Proprietary systems are specialized setups designed for alarm systems that are managed and monitored centrally by a single organization, often integrating various buildings and facilities under one network.

• Remote station systems involve the transmission of alarm signals to a central monitoring station, where they can be acted upon promptly by trained personnel. This type helps ensure that alarms trigger appropriate responses from emergency services or designated personnel.

• Local systems operate within a specific location or building, providing immediate alert signals to occupants and possibly integrating with evacuation systems. Their primary function is to alert people present in the immediate environment of fire conditions.

On the other hand, while "wireless" can describe certain modern technologies used in fire safety systems, it does not represent a distinct category or type of signaling system. Instead, wireless technology can apply to various existing types, such as local or proprietary systems, enhancing their functionality without defining a separate category. Therefore, wireless is not classified as a standard type of signaling system in fire safety, making it the correct choice for the answer.