Final answer:
The simplest fire alarm system utilizes a conventional hardwired system with input sensors for temperature detection and a three-wire system for safety.
Explanation:
The simplest type of fire alarm system is a conventional hardwired system. This system is straightforward and uses a basic configuration to trigger alarms when needed, such as through horns or lights.
In terms of the circuit for a fire alarm, an input sensor functions as the component to measure temperature variations. This crucial sensor helps detect potential fires by monitoring temperature changes.
The three-wire system is frequently utilized in fire alarm setups for safety purposes, ensuring proper wiring with live, neutral, and ground wires to prevent electrical hazards.
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