855P Optical smoke detector, with Isolator

The Tyco 855P (516.855.052) is an addressable optical smoke detector. Designed to provide fast and reliable notice of slow burning and smoking fires. As part of the Generation 6 MX fire detector range, it combines advanced technology with digital communication to deliver dependable fire protection across a wide range of applications.

Featuring a built-in line isolator, the 855P helps improve system resilience by isolating faults on the loop, making sure continued operation of the fire detection system is possible. In addition, multiple sensitivity settings allow the detector to be changed to suit different environments, making it useable for offices, commercial buildings, healthcare facilities, hotels.

The detector communicates using the Zettler digital protocol, providing reliable data exchange with compatible fire alarm control panels. Furthermore, its flexible design makes it ideal for both new installations and system upgrades where existing cabling can be reused to reduce installation costs.

Key Features

• Optical smoke detection for early warning of slow-burning fires
• Built-in line isolator for enhanced loop protection
• Multiple sensitivity settings to suit different environments
• Advanced smoke chamber design for improved false alarm rejection
• Quick and easy installation and commissioning
• Reliable communication using the Zettler digital protocol
• Fire, isolate, and fault LED indications
• Extended drift compensation for long-term reliability
• Supports up to 250 devices per loop
• Compatible with a wide range of bases and parts
• Ideal for both new installations or update current projects