Simplex ES Net High-Speed Life Safety Network

​Simplex ES Net fire and life safety network from Johnson Controls optimizes system design and installation flexibility while increasing network speed and performance. Supporting up to 687 nodes, ES Net is incredibly scalable, highly resilient and has the capacity to handle even the largest multi-building campus environments. 

ES Net allows multiple network topologies (ring, star, bus and bridged rings) for enhanced design and installation flexibility, improved fault tolerance and the potential to reduce the conduit and wiring. A redundant system with battery backup, ES Net carries critical life safety data, digital audio, and firefighter’s telephone communication throughout the facility. 


ES Net can also support supplemental network traffic, carrying data from other systems without any interference to fire alarm performance or emergency audio traffic. Devices such as security cameras, access control and building automation systems can now be seamlessly supported across the UL Listed, supervised, life safety network. 

Harnessing the power of IP technology, ES Net handles data rates up to 100MB per second and a range of network media choices including Ethernet, DSL and fiber, giving building owners a platform for future growth and integration.


Centralized system management allows all control units on the loop to be upgraded from a single location for quicker upgrades and programming. Enhanced diagnostics and troubleshooting tools speed installation, makes service easier, and helps maximize uptime.

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High speed, high capacity: TCP/ IP based, 100 Mbps network which supports up to seven network loops and 687 nodes. 

Network Wide Digital Audio: Voice messages are transmitted digitally across the fire alarm network, allowing system-wide emergency announcements with no extra wiring between nodes.

Network Firefighter Telephone support: Firefighter telephone communication is carried across the fire alarm network with no extra wiring between nodes required. ES Net also supports firefighter telephone communication over fiber.

Multiple topology support: A wide range of supported configurations means greater design and installation flexibility. ES Net also allows you to mix and match media, helping optimizing cost and performance.  

Faster, more convenient system upgrades: A technician connected to a single ES Net node can upload software updates to all 99 nodes on a network loop in just a few minutes. This eliminates the need to physically access each node and dramatically increases both system availability and technician productivity.

Easy migration for existing Simplex installations: ES Net and Simplex 4120 networks may be integrated using a TrueSite Workstation, allowing both networks to be installed and monitored within a facility. In some cases ES Net can utilize the facility's existing 4120 network infrastructure, making it easy and cost effective to upgrade to ES Net.  

Better Fault Tolerance, Resiliency and Diagnostics: ES Net is designed to be reliable and resilient. ES Net detects degraded and non-replicated paths between nodes and automatically reconfigures communication to help deliver uninterrupted network communications and operation. Advanced network diagnostic tools and reports help reduce system troubleshooting time and technician effort.

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