Description
CONSILIUM
SALWICO
NS-AOHS-IS
OPTICAL SMOKE/HEAT DETECTOR
PART NO: N11250
UI=28VDC, LI=93,3MA, PI=0,66W,
CI=1NF, LI=NEGLIGIBLE
NEMKO 05ATEX1136X
-20°C ≤ TA ≤ 70°C
The Consilium Salwico NS-AOHS-IS is a combined optical smoke and heat detector designed for use within marine fire alarm systems. Capable of detecting both visible smoke particulates and heat rise, this dual-function detector provides a reliable and fast response to developing fire conditions onboard. Its ATEX certification makes it suitable for installation in potentially explosive atmospheres, which is a critical requirement across a wide range of vessel types and spaces. As part of the Salwico addressable fire detection range, it plays a central role in maintaining the integrity of onboard fire safety infrastructure in compliance with maritime safety regulations.
Key Features
✓ Combined optical smoke and heat detection in a single unit, providing dual-technology response to fire conditions for enhanced onboard safety.
✓ Rated at UI=28VDC with a maximum input current of 93.3mA and power input of 0.66W, as specified in the original product data.
✓ Holds NEMKO ATEX certification (05ATEX1136X), confirming suitability for use in potentially explosive or hazardous areas aboard vessels.
✓ Operating temperature range of -20°C to +70°C, making it appropriate for varied shipboard environments from cold-store areas to engine spaces subject to high ambient temperatures.
✓ Designed for integration within Consilium Salwico addressable fire alarm systems; compatibility with specific panels or loop controllers should be confirmed against vessel system documentation.
Marine Applications
✓ Machinery spaces, engine rooms, and pump rooms where both smoke and heat detection are required and ATEX-rated equipment is specified.
✓ Cargo holds and enclosed working areas on tankers, gas carriers, and chemical carriers where hazardous atmospheres may be present.
✓ Accommodation and service spaces on cruise ships, ferries, and offshore vessels where early fire detection is critical to passenger and crew safety.
✓ Replacement or upgrade of existing Salwico fire detection loops on vessels undergoing survey, dry-dock maintenance, or fire system servicing.
✓ Newbuild and retrofit fire alarm installations on commercial vessels, offshore platforms, and naval auxiliaries requiring SOLAS-compliant detection equipment.
Why Marine Engineers Choose
The Consilium Salwico NS-AOHS-IS is a well-established detector within the Salwico fire alarm ecosystem, valued for its dual-detection capability, ATEX rating, and defined electrical parameters that simplify loop design and system integration. Its broad operating temperature range supports deployment across diverse shipboard locations without the need for additional environmental protection.
Ideal For
Tankers, gas carriers, chemical carriers, offshore support vessels, cruise ships, ferries, bulk carriers, and commercial vessels operating Consilium Salwico addressable fire alarm systems requiring ATEX-compliant smoke and heat detection.
Technical Support
Technical support is available for this detector and the wider Consilium Salwico fire alarm system. Assistance covers onboard installation guidance, fault diagnosis, and remote troubleshooting to help engineers resolve issues efficiently and minimise downtime.




