The Exhaust Baffle Extension Alarm Box is a professional marine safety monitoring accessory tailored for ship ventilation and smoke exhaust system linkage control. It is exclusively designed for centralized signal acquisition, operating state feedback and fault alarm monitoring of marine exhaust baffles, ventilation dampers, air supply and exhaust devices on various vessels and offshore platforms. Serving as a dedicated extended control and alarm unit for marine ventilation systems, it supports real-time monitoring of the opening/closing state, operating faults and linkage execution status of ship exhaust baffles. It triggers instant alarm prompts upon detection of abnormal conditions, effectively ensuring the safe, stable and compliant operation of ship ventilation, smoke exhaust and fire protection systems during navigation and offshore operation.
Adopting marine-grade circuit design, salt spray corrosion resistance structure and high-strength anti-interference layout, this alarm box features extreme operational stability, ultra-sensitive response and strong adaptability to harsh marine working conditions including high humidity, high salt spray and strong electromagnetic interference. It can achieve perfect linkage matching with ship fire alarm systems and marine ventilation equipment, realizing automatic real-time detection and accurate signal feedback of exhaust baffle actions. It thoroughly solves common marine system hidden dangers such as baffle jamming, linkage failure, line abnormality and undetectable equipment faults in traditional ship ventilation systems, providing solid and reliable safety technical guarantee for ship fire prevention, smoke elimination and cabin ventilation safety.
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Parameter Item
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Technical Specifications
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Rated Working Voltage
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DC 24V / AC 220V (Optional)
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Working Current
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≤120mA (Standby); ≤250mA (Alarm & Linkage State)
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Monitoring Channels
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4/8/12 Channels for Exhaust Baffle Monitoring (Optional)
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Signal Input Type
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Baffle in-place switching signal, fault feedback signal, linkage trigger signal
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Response Time
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≤150ms
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Alarm Mode
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LED fault indicator alarm, passive contact signal output, system remote feedback
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Communication Interface
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RS485 (Standard), Dry contact signal output
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Transmission Protocol
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Modbus RTU
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Working Temperature Range
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-15℃ ~ +55℃
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Working Humidity Range
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5%RH ~ 95%RH (Non-condensing)
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Protection Grade
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IP40
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Shell Material
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High-strength ABS / Metal Iron Shell (Optional)
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Installation Method
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Wall-mounted Fixed Installation
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Service Life
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≥8 Years of Stable Service Life
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