DIGITAL LIGHT METER

KEW 5204 / 5204BT

Wide range and precise illuminance measurement
Streamlines report creation

Wireless communication
with Smartphone or tablet.
(5204BT only)

Photo:5204BT

 Wide range illuminance measurement 0.0

to 199900 lx
 With auto zero adjustment function toachieve precise measurements
 Detachable & Rotatable Light Sensor

 Capable of measuring LED illuminance MAX/MIN Function
 Large LCD with Backlight Bluetooth communication function(5204BT only)

Large LCD
with Backlight KEW 5204 / 5204BT Specification
Light detector
Measuring range
Range
Resolution
Accuracy
Angle deviation from cosine
characteristics
Temperature characteristics
Relative spectral sensitivity
characteristics
Response time

KEW Smart Advanced application
streamlines report creation.

Silicon photo diode0.0 to 199900 lx
199.9/1999/19990/199900 lx
0.1 lx±4%rdg±5dgt (23°C±2°C)
10° ±1.5%, 30° ±3%, 60° ±10%, 80° ±30%

Download and install our special application “KEW Smart Advanced” in yoursmartphone or tablet device for logging the measured values. Measured values
can be saved in your smartphone or tablet device in csv format: the data is editable in excel format.
List screen
Detail screen±5% (at 23°C reference and a range of 0 to 40°C)
Deviation from spectral luminous
efficiency: 9%
Auto range: 5s or less
Manual range: 2s or less
Operating temperature and 0 to 40°C, relative humidity 80% or lesshumidity range(no condensation)
Storage temperature and -10 to 60°C, relative humidity 70% or lesshumidity range(no condensation)
Auto power off
30 min.
Applicable standards
IEC 61326
Communication interface*1
Bluetooth®
Power source
R6/LR6(AA)(1.5V) × 2
Dimension / Weight
169 (L) x63 (W) x37 (D) mm / Approx. 210g
Accessories
9195(Carrying case), Instruction manual
LR6(AA) × 2

Comment
editable520

Please search
Application for Android
Free Android software "KEW Smart Advanced" is available on "Google Play Store".

* LED illuminance measurements are verified by testing only the typical illuminance, frequency, and duty ratio of pulsed white LED.
*1 5204BT only
Bluetooth is a trademark or registered trademark of Bluetooth SIG. Inc. Android is a trademark or registered trademark of Google Inc.
iOS is a trademark or registered trademark of Cisco Technology, Inc. in the United States and other countries.

Application for iOS
Free iOS software "KEW Smart Advanced" is available on "App Store".

Detachable & Rotatable Light Sensor

 Relative Spectral Response Characteristics in the Visible Spectrum
1

Relative spectral responsivity

0.9
0.8

5204/5204BT

0.7

Spectral luminous
efficiency

Light sensing probe can be angled while fixed to the main unit.
The probe can also be detached for use.

0.6
0.5
0.4

Name of Parts and Position

0.3
0.2

REF.LEVEL

0.1
0
350

400

450

500

550

600

650

700

750

800

Wavelength [nm]

 Adequate Light Levels for Your Working or at Your Work Areas
LUXES (lx) 3,000

2,000

1,500

OFFICE-FACTORY-

Extra fine visual
work

SCHOOL

-

1,000

750

500

300

200

150

100

Inquiry office
Entrance hall (day-time)
Dining room
Stair
Director room
Night-duty room
Council room
Library, Tearoom
Electrical computer room
Warehouse,
Dressing room
Reception room
Lift, Passage
Toilet, lavatory
Guard station
Stair
Control room,
Design room
Entrance
Electric room
Drawing room
Passage Path
Air conditioning machine
Warehouseroom, lavatory, Toilet
Classroom,
Faculty room,
Drawing room
Dining room,
Stair
Gymnasium
Night-duty room
Clothing classroom,
Auditorium,
Electronic computer room
Assembly room
Experimental laboratory
Passage
Locker room
Reading room
lavatory, Toilet
Health care room

75

50

30

20

15

Indoor emergency
staircase-

Indoor emergency
staircase-- Lens Protecting Cover Light Sensing Probe/Photocell
 LCD Display
 Power button
Backlight button

 HOLD button
 Max/Min button Range selector button
 0 ADJ button
 Battery cabinet cover

Please read the "Safety Warnings" in the instruction manual supplied with the instrument thoroughly and completely

correct use. Failure to follow the safety rules can cause fire, trouble, electrical shock, etc. Therefore, make sure
Safety Warnings : forto operate the instrument on a correct power supply and voltage rating marked on each instrument.

For inquiries or orders :2-5-20, Nakane, Meguro-ku, Tokyo, 152-0031 Japan
Phone:+81-3-3723-0131
Fax:+81-3-3723-0152

This leaflet was produced in January 2024. The contents of this leaflet are subject to change without notice.

LC_5204_5204BT_2_0_Jan24_AD_en