Which device connects a caller directly to a telecommunicator?

The call box is specifically designed to facilitate direct communication between a caller and a telecommunicator. These devices are often located in public areas and allow individuals to report emergencies or seek help by pressing a button, which connects them directly to emergency services. This direct link is crucial for ensuring rapid response times during emergencies.

In contrast, a central alarm station typically serves as a monitoring point for various alarm systems but does not facilitate direct communication. Local alarms are designed to alert nearby individuals but do not connect to a telecommunicator. A fire alarm box, while related to fire safety, often triggers an alarm at a central location but does not provide a direct communication pathway for the caller to speak with a telecommunicator. The primary function of the call box makes it the correct answer for connecting a caller directly to emergency services.