Manual

ETC Installation Guide
Unison
®
Echo Light Sensor
Corporate Headquarters  3031 Pleasant View Road, P.O. Box 620979, Middleton, Wisconsin 53562-0979 USA  Tel [phone]  Fax [phone]
London, UK  Unit 26-28, Victoria Industrial Estate, Victoria Road, London W3 6UU, UK  Tel [phone]  Fax [phone]
Rome, IT  Via Pieve Torina, 48, 00156 Rome, Italy  Tel [phone]  Fax [phone]
Holzkirchen, DE  Ohmstrasse 3, 83607 Holzkirchen, Germany  Tel [phone]  Fax [phone]
Hong Kong  Rm 1801, 18/F, Tower 1 Phase 1, Enterprise Square, 9 Sheung Yuet Road, Kowloon Bay, Kowloon, Hong Kong  Tel [phone]
Service: (Americas) [e-mail]  (UK) [e-mail]  (DE) [e-mail]  (Asia) [e-mail]
Web: www.etcconnect.com  Copyright © 2014 ETC. All Rights Reserved.  Product information and specifications subject to change.
7186M2170  Rev A  Released 2014-08  ETC intends this document to be provided in its entirety.
Overview
The Echo Light Sensor provides light level measurement and lighting control
for the connected Echo control system. The Echo Light Sensor measures
lighting conditions to maintain a programmed lighting output in both dimmed
and switched systems.
Light Sensors are available in three models:
• E-LS - Light Sensor Head with Controller
• E-LSC - Light Sensor Controller Only
• E-LSH - Light Sensor Head Only
Each controller supports one or two Light Sensor Heads and is available in
white or black finish.
A Light Sensor Head may be installed within the controller or installed remotely,
using up to 1,000 feet (304m) of 16 AWG wire per controller. When using a pair
of Light Sensor Heads, both sensors transmit their light readings to a single
Light Sensor Controller. The controller averages the levels and uses them to
control lighting within the space.
Wire Specification
Controller
The Light Sensor Controller utilizes EchoConnect for power and for data
communications with an Echo Control System. EchoConnect is a bidirectional
protocol that uses one pair of wires (data + and data -) for both data and power.
ETC recommends using Belden 8471 (or approved equal) Class II wire. The
total combined length of an EchoConnect wire run (using Belden 8471 or
equal) may not exceed 1,640 feet (500m).
Light Sensor Head
with Controller
Thread
extender
Light Sensor
Head