Specification

PRODUCT DATA
Footcandles
Energy
Savings
Begin
Perceived
Light
Level
Min.
Light
Level
Light
Maintain
Level
Light generated from
xture attached to Leviton
Lighting Control System
Ambient light
6AM 8AM NOON10AM 2PM 4PM 6PM
Leviton Manufacturing Co., Inc. Lighting & Energy Solutions
20497 SW Teton Avenue, Tualatin, OR 97062 • Telephone: [phone] • Fax: [phone] • Tech Line (6:00AM-4:00PM P.S.T. Monday-Friday): 1-800-959-6004
© 2015 Leviton Manufacturing Co., Inc. All rights reserved. Subject to change without notice.
Photocells
Photocells
Leviton’s photocell sensors precisely monitor
either task or ambient light levels. As part of a
Leviton lighting and energy solution, photocells
work with other components in the system
to automatically adjust light levels to a user-
defined level. Photocells are most suitable for
installation in rooms with windows and open
spaces receiving substantial ambient light.
Photocells must be hardwired to a compatible
Leviton lighting control system. The photocell
measures ambient light in a specific area and
sends this data to a dimmer or relay that, in
turn, adjusts fixtures to a constant lighting
level as measured in that specific area. Daylight
harvesting is achieved as lights in a room (with
windows or significant, artificial ambient light)
automatically brighten or dim depending on how
much light the photocell detects.
BENEFITS
• Constant lighting at the optimal level for
greater visual comfort and acuity, which
contributes to improved productivity
• Provides convenient, automatic hands-free
daylight harvesting when integrated with
Leviton lighting control products
• Lowers electric bills by reducing usage of
lighting where ambient natural light is also
present
• Lumen maintenance opportunity compatible
DAYLIGHT HARVESTING
With daylight harvesting, ambient (often natural)
light supplements in-room, artificial light in
order to keep a constant lighting level while
simultaneously saving energy. This ensures
unnecessary overhead lighting remains dimmed
or OFF. This constant level is programmed into
a compatible control device. Once hardwired to
the photocell, the dimmer or relay receives the
photocell’s real-time light measurement and
maintains a steady level within the photocell’s
area of detection.
RULES OF OPERATION
Measured light level = Light Maintain Level
Action: Output to lights remains constant
Measured light level < Light Maintain Level
Action: Lights are brightened
Measured light level > Light Maintain Level
Action: Lights are dimmed