EM Series Catalog Page

EM Series Catalog Page
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LIGHTING CONTROLS
PHOTO SWITCHES
EM SERIES
DESCRIPTION
The EM is a low voltage photocell used for controlling exterior
lighting and signage. The photocell provides an ON signal
when the ambient light level drops below a preset dark
setpoint. It then provides a signal OFF as the ambient light
level rises above the preset light setpoint. The photocell relay
contact red wires are connected to a panel, to a low voltage
controlled loads or directly to a Building Automation System.
FEATURES
• On at dusk, off at dawn operation
• Simple installation and wiring
• One set of normally open, isolated relay contacts;
contacts are closed when sensed light level is below
dark setpoint, open when light level is above light
setpoint
• 8-second time delay and built-in setpoint deadband
prevent cycling
• 1/2" threaded male conduit base for easy mounting on
conduit fittings or junction boxes.
• Weatherproof enclosure
• Economical input to BAS or lighting control systems
• Ideal for outdoor lighting, billboard lighting, security
lighting
EM Series
OPERATION
INSTALLATION/ MOUNTING
Mount on exterior or roof of building. Point light sensing
window North. The photocell provides an ON signal when
the ambient light level drops below a preset dark setpoint. It
then provides a signal OFF as the ambient light level rises
above the preset light setpoint. The setpoint can be changed
for specific applications by opening and closing the photocell
aperture window.
LIGHTING CONTROLS
WIRING
SPECIFICATIONS
Supply Voltage
24 VAC/VDC, 1 VA
Relay Type
N.O. SPST
Relay Output
1 A at 30 VAC/VDC
Lead Length
8" (20.32 cm)
Lead Wire Type
Pigtail leads, 20 AWG
Accuracy
±10% FC
Operating Temperature-25° to 125°F (-31.7° to 51.7°C)
Mounting
Stem with 1/2" thread fitting
Dimensions
2.64" x 1.57"x 1.89"
(67.1 x 39.9 x 48.0 mm)
Enclosure Rating
NEMA 3R weatherproof
Weight
0.4 lb (0.18 kg)
Warranty
1 year
11
Light Sensing
Window
Sliding Window
Aperture
1/2" Thread Fitting
24 VDC
24 VAC
BLK (24+)
BLK
RED
WHT (com)
BLK
RED
Model EM
N/O Relay Contacts
1A @ 30 VAC/VDC
(closes below dark
setpoint)
ORDERING INFORMATION
MODEL
EM-24A2
EM-24VD2
March 2014
DESCRIPTION
24 VAC Exterior photocell with relay contact
24 VDC Exterior photocell with relay contact
WE MAKE IT EASY.
kele.com
888-397-5353 USA
649
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