Edwards EC2-OS Smoke Detector

The Edwards EC2-OS is a conventional two wire smoke detector designed to provide reliable fire detection in commercial fire alarm systems. Utilizing advanced photoelectric sensing technology, it delivers early smoke detection while minimizing nuisance alarms through automatic drift compensation and continuous sensitivity monitoring.

Part of the Edwards EC2 Series, the detector features low current operation, a plug in design, and dual LED indicators that simplify installation, maintenance, and troubleshooting. It is suitable for a wide range of commercial, institutional, and industrial indoor fire alarm applications.

Product Functions

• Detects smoke using photoelectric sensing technology
• Reports alarm conditions to the fire alarm control panel
• Performs automatic drift compensation
• Continuously monitors detector sensitivity
• Provides visual alarm indication
• Supports remote LED indication
• Operates on conventional two wire initiating circuits
• Supports supervised fire alarm systems

Electrical & System Information

The EC2-OS operates on conventional two wire initiating device circuits with an operating voltage range of 6.5 to 33 VDC. It incorporates automatic drift compensation to maintain sensitivity throughout the detector’s service life while reducing nuisance alarms.

The detector includes dual LED indicators for standby and alarm status and provides a remote LED output for use with a compatible remote indicator. It is designed for installation on compatible EC2 detector bases and is suitable for air velocities up to 4000 feet per minute.

Features

• Smoke detector
• Photoelectric smoke sensing
• Two wire operation
• Automatic drift compensation
• Continuous sensitivity monitoring
• Dual LED indicators
• Remote LED output
• Plug in installation
• Low profile design
• Low standby current
• Commercial fire alarm application
• White housing

Mounting & Design

The EC2-OS installs onto a compatible detector base using a twist lock design that allows fast installation and servicing without disturbing field wiring. Its low profile housing provides a clean appearance while simplifying routine inspection, testing, cleaning, and replacement.

The detector is constructed from durable engineering polymer and is intended for indoor commercial installations.

Protection & Applications

Suitable for:

• Commercial Fire Alarm Systems
• Office Buildings
• Hospitals
• Healthcare Facilities
• Schools and Universities
• Hotels
• Government Buildings
• Industrial Facilities
• Warehouses
• Retail Buildings
• Institutional Facilities
• Indoor Fire Detection

Technical Specifications

Manufacturer: Edwards

Parent Company: Carrier

Model: EC2-OS

Series: EC2 Series

Product Type: Smoke Detector

Detection Method: Photoelectric Smoke Sensing

Operating Voltage: 6.5 to 33 VDC

Wiring: Two Wire

Standby Current: 88 Microamps Typical at 24 VDC

Alarm Current: Up to 60 Milliamps Maximum

Sensitivity: 0.5 Percent to 4.36 Percent Per Foot Obscuration

Status Indicators: Dual LEDs

Remote LED Output: 5 to 8.5 Milliamps

Operating Temperature: 32 Degrees Fahrenheit to 120 Degrees Fahrenheit 0 Degrees Celsius to 49 Degrees Celsius

Relative Humidity: 0 Percent to 95 Percent Non Condensing

Air Velocity: 0 to 4000 Feet Per Minute

Wire Size: 12 AWG to 18 AWG

Reset Voltage: 2.5 VDC Maximum

Application: Indoor Commercial Fire Alarm Systems

Listings: UL 268 Seventh Edition Listed, ULC Listed, FM Approved, and CSFM Listed. Verify product labeling, installation instructions, local codes, and project requirements before installation.

Applications

The Edwards EC2-OS is designed for commercial fire alarm systems requiring dependable conventional smoke detection. Typical applications include office buildings, hospitals, schools, universities, hotels, warehouses, industrial facilities, government buildings, retail centers, and other commercial occupancies requiring reliable indoor photoelectric smoke detection.

EC2-OS Datasheet