The Terminal Box (terminal processor) is the control terminal of the product. The FyreLine Resettable Junction Box is a component of the FyreLine Resettable Linear Heat Detection (LHD) system, a fire protection solution designed for reliable overheat detection in various industries like power generation, oil and gas. With its user-friendly design, the UCB ensures quick and easy installation, while offering reliable performance in even the toughest environments. Analogue EOL units can monitor for both open and closed circuit faults. The polymers between the two conductors will break down at specific fixed temperature allowing the conductors contact, the. JUNCTION/EOL Box with test facility.