Crestron electronic GLS-LOL Prospecto

 

Crestron GLS-LOL 

(Wattstopper P/N LS-290C)

PHOTOCELL LIGHT SENSOR

Operations & Installation Guide

If you cannot locate specific information or have questions after reviewing this guide, please take 

advantage of Crestron's award winning customer service team by calling Crestron at 

1-888-CRESTRON [1-888-273-7876].

You can also log onto the online help section of the Crestron website (www.crestron.com/onlinehelp) to 

ask questions about Crestron products. First-time users will need to establish a user account to fully 

benefit from all available features.

As Crestron improves functions, adds new features and extends the capabilities of the GLS-LOL units, 

additional information may be made available as manual updates. These updates are solely electronic 

and serve as intermediary supplements prior to the release of a complete technical documentation 

revision.

Check the Crestron website periodically for manual update availability and its relevance. Updates are 

identified as an “Addendum” in the Download column.

This device complies with part 15 and part 18 of the FCC rules. Operation is subject to the following 

two conditions: (1) This device must not cause harmful interference, and (2) This device must accept 

any interference received, including interference that may cause undesired operation.

The GLS-LOL is a low voltage photocell which senses light levels and signals this data 

to an interface device such as the GLS-SIM  connected to the Crestron

®

 control system.

The photocell is designed for mounting in a dry location that views daylight. The photocell 

should not directly view illumination from an electric light source. The following figure 

shows the GLS-LOL field of view.

Where windows are the primary source of daylight, the photocell typically mounts on the 

ceiling between the window and the first row of fixtures. (Refer to the following figure.) The 

photocell points toward the window. 

For skylight applications, the photocell mounts in the lightwell of the skylight and should 

view the incoming daylight. Typically, the photocell is aimed toward the skylight. The light 

level range adjustment jumper may need to be changed to 60-6000fc for skylight 

applications. 

Before installing the photocell, verify the daylight levels on a sunny day at the proposed 

location of the photocell. With the lights switched off, use a light meter to read the daylight 

level. Orient the light meter in the same direction that the photocell will view. The light 

levels under sunny conditions must be at least 35fc. If the light levels are less, you should 

select another location or reorient the photocell.

Use CRESNET-P/-NP cables only. Maximum distance is 250 feet.

1.  To access the GLS-LOL wiring terminals, insert a small, flatblade 

screwdriver into a slot on the housing and remove the base from the lens 

assembly.

2.  Review the “MOUNTING” section on the next page to determine how the 

cable to the controller will enter the photocell housing. Modify either the 

lens housing or the base as instructed in step 2A or 2B.

• 

To be installed and/or used in accordance with appropriate electrical codes and 

regulations.

•  If you are unsure about any part of these instructions, consult a qualified electrician.

•  Sensors must be mounted on a vibration free surface.

•  All sensors must be mounted at least 6 feet away from air vents.

When wiring the Cresnet

®

 network, consider the following:

• 

Use Crestron Certified Wire.

•  Use Crestron power supplies for Crestron equipment.

• 

Provide sufficient power to the system.

CAUTION: Insufficient power can lead to unpredictable results or damage to the 

equipment. Please use the Crestron Power Calculator to help calculate how much power 

is needed for the system. (www.crestron.com/calculators).  

WARNING: To avoid fire, shock, or death; turn off power at circuit breaker or fuse and 

test that power is off before wiring!

NOTES: Observe the following points regarding sensor installation.

Strip the ends of the wires approximately 1/2”. Use care to avoid nicking the conductors. 

Twist together the ends of the wires that share a connection and tin the twisted 

connection. Apply solder only to the ends of the twisted wires. Avoid tinning too far up 

the wires or the end becomes brittle. 

Peak 

Sensitivity

GLS-LOL

Light Fixture

Window

45°

Crestron Electronics, Inc. 

15 Volvo Drive   Rockleigh, NJ 07647 

Tel: 888.CRESTRON 

Fax: 201.767.7576  

Specifications subject to 

www.crestron.com 

change without notice.

Power Consumption

0.2W (8mA @ 24VDC)

Field of View Coverage

60° Cone

Output

   Signal Range:

   Light Level Range:

0 - 10VDC 

Selectable, 3 to 300 footcandles (fc), 

30 to 3000fc, 60 to 6000fc

Recommended Mounting Location

Directly above work space

Cable to GLS-SIM or other

compatible Crestron interface 

device.

GLS-LOL

Peak

sensitivity

1.2 in.

(3.05 cm)

45º

30º

30º

Ceiling tile or drywall

60º field of view

2.0 in.

(5.08 cm)

UL and cUL Listed

Class 2