User Manual

14 15
2.Install Battery
When install the lithium battery, please put the battery into battery container
in the direction shown by the arrow. When 1pcs of battery installed, 240pcs
of LEDs can be lighted up. When 2pcs of batteries installed, 480pcs of LEDs
can be lighted up.
NOTE: The battery capacity of YONGNUO NP-F750 reaches up to 5200mAh. When
YN508 is set to the maximum luminous intensity, it will keep working about 150 minutes.
Please take the batteries out when this video light is not used.
4.External Power Supply
Its optional to use 2pcs of YONGNUO AC adapter to help this LED video
light to acquire long working hours. When using external power, please
turn the switch to power supply mode, then the LED video light will cut
off the battery supply and stop charging the battery. The power port is +
inside and -outside, the input voltage is 12V and electric current is 2A.
Note: When 1pcs of YONGNUO AC adapter is used, just half of the ring
light can be lighted up. Therefore, please purchase 2pcs of 12V2A
YONGNUO AC adapter to use with this LED video light. Any product
malfunction caused by using AC adapter of other brands, YONGNUO is
not responsible for warranty repair.
1.Startup &Shutdown and Brightness Adjustment
First install the battery or insert DC power, then switch the power switch, the LED
video light is lit, press the 5500K brightness adjustment button, adjust the
brightness of the video light.
2.Power Test
Press Batt power test button, the digital tube will display the battery capacity
reading. As shown in the following picture, the capacity of the left battery is 30%,
and the right battery is 90%.
Note: The battery remaining capacity tested when the luminous intensity is low will
be different from the battery remaining capacity tested when the luminous intensity
is high. The battery capacity tested is how long the service time of YN508 will last
under the current luminous intensity.When using the external power supply, you
press the battery capacity testing button, the screen will shows DC.
3.Channel Switch
Press channel switch button to adjust the LED video light to the channel needed,
and the display screen shows CH1 to CH8. Assume that the channel of L is switched
to CH2, it means that the channel of R is as well switched to CH2. At this moment,
L and R can adjust their brightness mutually. If you have several YN508, you can
control the brightness and switch by group, at most 8 groups.
YN508 has two YONGNUO 2.4G wireless control system. When organize and use
YN508 as a ring light, please adjust them to same channel.
Note: This LED video light supports YONGNUO 2.4G wireless control. Accessories
do not contain remote controller.
4.Mobile APP Remote Control
The product supports mobile remote control , the APP can be downloaded
from the YONGNUO official website or download through scanning the
two-dimension code on the gift box, Moible phone APP will be updated
continuously. Please pay attention to YONGNUO official website for
latest version of APP to get better remote control experience.
1.YN508 is the first two-in-one LED video light designed and made by YONGNUO.
It can be used as a ring light by organizing its structure, or, divided it into two
independent video light. YN508 meets kinds of photographic demand and
supplementary lighting needs.
2.YN508 adopts 480pcs of high-brightness, high CRI (Color Rendering Index) and
high TLCI (the Light Consistency Index) LEDs, which helps the video camera to
increase its color accuracy and perfectly reproduce the color of the shooting object.
3.YN508 can be remote controlled by mobile phone. Download a mobile APP from
the official YONGNUO website, control the LED video light from a mobile phone
and read the current brightness, group and channel settings of the LED video light.
Switch and brightness of at most 8 groups of LED Lights can be separately controlled.
4.YN508 supports multi-channel wireless control. It means that the switch and
brightness of the LED video light can be remote controlled, at the meanwhile, at
most 8 groups of LED video lights can be crossover controlled. (Remote controller
is optional.)
5.YN508 supports dual power input. It supports NP-F series battery and external
DC power supply. It meets kinds of shooting requirements with these two power
supply modes.
6.YN508 adopts YONGNUO proprietary LED constant current driving technology
which does great help to effectively avoid corrugation and stroboscopic flash.
7.YN508 adopts dual LED digital display screen. The display effect is more
stereoscopic and its more intuitive when check the power output.
8.YN508 is equipped with a professional U-type stand. Its more convenient and
swift to adjust the supplementary lighting angle.
Bat t CH
+ +
Bat t CH
Batt CH
+ +
Batt CH
+ +
Batt CH
Batt CH
Tighten up the fix knob
In st al l the assembly p ar ts
an d ass em bl y regulated s cr ew s
In st al l the
st an d and
fi x kno b
1.Product Installation
a.Please install this products in the following order.
Organize the product
Batt CH
+ +
Batt CH
+ +
Batt CH
+ +
Batt CH
+ +
Short press will control the brightness
of 1% precision .Long press will rapid
adjust the brightness.
b.This video light can be disassembled and used as two independent lights.
Function Introduction
Thank you for using the YN508 LED video light. Please read the manual
carefully and keep this user manual properly for reference.
1.When using this LED video light, please place it under the ventilated
2.Do not disassemble the product, maintenance or repair of this product
should be carried through by technical maintenance personnel of our
company or technical maintenance personnel authorized.
3.Do not use this product in flammable and explosive place, or where it
can be exposed to moisture.
4.Please keep this product away from the children.
Two NP-F750 series lithium
Contents: Video light(LR); user manual(1);U-type stand(1); A set of set
pieces(1) Note: please contact your dealer if the contents missing.
480 LED lamp beads
Compatible batteries
External power source Two12V 2A DC power
Control distance <15M
Product Specificaion
30W(15W and 15W)
1. Soft light panel
2.Stand fix knob
3.mobile phone fix seat
4.U-type stand
5.Assembly part
6.Assembly regulating screw
7.Power switch
The power supply mode can
be adjusted, : DC supply mode;
: Battery supply mode;
: Off.
8.LED digital display screen
9.Battery container
10.DC power port
11.Battery latch
12.Channel switch button
13.Power Test button
14.5500K +/- button
15.3200K+/- button
Short press color temperature
+/- button, the brightness can
be accurately controlled by 1%;
long press to quickly adjust
the brightness.
Product Structure
Installation and fixed
Method Application
The functions in this manual are based on the test conditions of our company.
Further notice will not be given if the design and specifications change.
Add:Building A, Shenfubao modern optics factory,Kengzi Street,
Pingshan District, Shenzhen
TEL:0755-8376 2448
Manufacture address:4/F,Building 2, Donglongxing Technology
Park,East Huaning Road, Dalang Street,Longhua District,Shenzhen
After-sales Service TEL:400-0013-888
Failure Analysis and Troubleshooting
Tripod interface
5.Use on fixed tripod
Rotate the
bracket knob,
adjust the fill
light angle as
Capacity of battery is shown on the Nixie tube
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may
cause undesired operation.
Warning: Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
Reorient or relocate the receiving an tenna.
Increase the separation between the equipment and receiver. 
Connect the equipment into an outlet on a circuit different from that to which the  
receiver is connected.
Consult the dealer or an experienced radio/TV technician for help. 
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated
with minimum distance 20cm between the radiator & your body.

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