Thomas Research Products ZenNet TWL-U-W Installation Manual

Menu (O) Button
1.15" [29.21mm]
2.35"
[59.57mm]
Solar Cell
Package Contents
▪
Light Level Sensor
▪
2 screws, 2 wall anchors
▪
Wire bracket
Product Description
The ceiling-mounted Wireless Daylight Sensor is wireless,
powered by natural light, and uses the solar cell to measure
outside illumination to control open loop dimming systems.
Every minute the wireless daylight sensor measures the current
light level via the solar cell.
If the change since last transmission is >50 lux it will
immediately transmit an RF signal including the current
measurement value. Otherwise there will be a heartbeat
transmission after 20-30min.
In addition the device provides a light test mode which can be
used to find a suitable position for installation.
Features Include:
▪
Communicates wirelessly with other devices using the
EnOcean wireless standard
▪
Harvests ambient solar energy to power the sensor and
wireless communication
▪
Measures light level via the solar cell
▪
Mounts easily on any ceiling material
▪
Enables daylight harvesting in individual fixtures or zones
controlled by TWR-D10 or other open loop dimming systems
© 2015 Thomas Research Products • www.trpssl.com
Set (I) Button
6.3" [159.96mm]
Tools Required
▪
Power drill, 3/16" bit
▪
Screwdriver
▪
Light meter
(for verification)
ZenNet Installation Guide:
Wireless Daylight Sensor
TWL-U-W
Specifications (typ. values)
Power Supply:
Measurement Range
Resolution
Typical Accuracy
Measurement Interval
Transmission Interval
Startup Charge Times*
First motion transmission
Sustaining Charge Time*
Time to Full Charge*
Operating Life in
Total Darkness
Configuration Interface
RF Communications
Transmission Range
EnOcean Equipment
Profile
Dimensions
Weight
Mounting Position
Environment
Agency Compliance
* Natural bright light (2000 lux) can be temporarily used to significantly
shorten startup charge times. Specified lux values are for typical fluorescent
lighting. Lux level requirements for LED and other types may vary. For lux
reference, OSHA standards require a minimum of 323 lux for office areas.
Technology From:
Solar energy harvesting
0 – 1020 lux
4 lux
+- 5% @ full scale, 68°F
1 minute
After measurement if change > 50
lux since last transmission
Heartbeat every 20-30 minutes
(affected at random)
(operation from empty energy storage)
5 minutes @ 200 lux
3 hours per 24 hours @ 200 lux
30 hours @ 200 lux
80 hours
(after full charge)
2 Buttons, 2 LED for device
configuration & manual control
EnOcean 902 MHz
80 ft. (25 m)
A5-06-02
6.30" L x 2.36" W x 1.15" D
(160mm x 60mm x 30mm)
4.4 oz. (125 g)
At the ceiling, close to the ambient
light source (window)
Indoor use only
32° to 140°F (0° to 60°C)
20% to 85% relative humidity
(non-condensing)
FCC, IC, RoHS
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