MADE IN JAPAN
When both strobes are the YS-D1
［ ］Setting example
YS
D2
YS
01
YS
D1
YS
03
YS
D2
YS
01
YS
D1
YS
03
POWER
/
MODE
MADE IN JAPAN
Thank you for purchasing SEA&SEA products. Please read this instruction manual
carefully prior to using this product. Only with a thorough understanding of this manual’s
content will you be able to use this product correctly. After reading the manual, please be
sure to keep it in a place where you can easily come back to it at any time.
Never attempt to disassemble, repair or alter the product yourself to prevent significant electrical
hazard due to the high-voltage circuitry in the product. Do not heat the product or put it into a fire,
this could result in explosion or fire. Unauthorized disassembling and/or modification could result in
malfunction or flooding, and avoid product warranty. Take the product to a SEA&SEA authorized
service center for repair or inspection.
DANGER
DANGER
Use only batteries approved for use in this product. Do not mix old and new batteries or batteries of
different types.
Remove batteries before transport or storage, or when you are not going to use the product for an
extended period of time, to prevent unexpected activation.
When opening the housing, do not place your head directly over and close to the rear case. Due to
a chance of accumulated gas from the batteries, the rear case may open quickly doe to increased
pressure, possibly causing injury.
Do not let water and/or foreign material in this product. This may cause fire or electrical failure.
Do not handle batteries wet hands to prevent shock hazards.
Do not use the product in the presence of flammable gas, as this could result in explosion or fire.
Keep out of reach of children to prevent accidental ingestion. If swallowed, seek medical advice
immediately.
WARNING
WARNING
Should you notice smoke or an unusual smell coming from the product, turn it off and remove the
batteries immediately, taking care to avoid burns. Continued operation could result in injury. After
removing the battery, take the product to a SEA&SEA authorized service center for inspection.
Discontinue use and turn the product off immediately should you notice flooding or leakage.
When the product is flooding, interior pressure may build up. Please be careful when opening the
product as water may spurt out or the cap may open explosively and cause injuries.
The product has been constructed with an airtight seal. When packing the product for airplane
travel, do not seal-up the product to alleviate pressure build up due to atmospheric changes.
Do not open the product in a wet or sandy environment. Protect the interior from moisture and
debris in order to prevent malfunction or flooding.
Keep away from strong magnetic fields. Do not use or store this product in the vicinity of equipment
that generates strong electro-magnetic radiation or magnetic fields. Strong static charges or the
magnetic fields could cause malfunction, or affect the product's internal circuitry.
Avoid strong shocks/impacts or excess stress to prevent malfunction, damage or breakdown. Make
sure that the product has been securely mounted to other products in order to prevent injury, fall or
missing.
Do not carry the camera or housing by holding the accessories such as arm, cable, strobe, etc.
Heavy components may fall and cause damage or injury.
Do not rest heavy weight on the product. It might deform the outer casing, damage internal parts,
make the waterproofing fail, or result in fire or electric shock.
Never use chemicals, cosmetics, any petroleum solvents such as paint thinner, or neutral detergent
on the product. They may deform and damage the product.
Do not leave the product in places with hot temperatures such as inside of a car or in a car trunk in
summer. The heat may deform plastic parts of the product, damaging internal parts and resulting in
potential fire or electric shock. If the product is sealed tight in hot conditions, heated air expanding
inside the product may deform the casing and ruin the waterproofing.
Do not store the product in wet or high humidity place, to avoid mold, rust, corrosion or malfunction.
Do not store the product with naphthalene or camphor mothballs, or in locations such as a
laboratory where chemicals are used. This environment can cause mold, rust, corrosion or
malfunction.
SEA&SEA SUNPAK Co., Ltd. assumes no liability for compensation of loss of captured
images or expenses caused by loss of images, even if you are unable to shoot due to a
product defect or malfunction.
SEA&SEA SUNPAK Co., Ltd. will not be responsible for the replacement or compensation
for cameras, lenses or those accessories damaged due to your invalid operation.
SEA&SEA SUNPAK Co., Ltd. assumes no liability for errors or discrepancies in this manual.
Specifications and appearance are subject to change without notice.
CAUTION
CAUTION
50151
Safety Precautions
Optical YS Converter/S2 for MDX housing
Failure to heed the precautions listed below could result in serious
consequences. To prevent injury or damage to yourself and/or others,
please observe the precautions as they contain highly important
information related to personal and product safety.
Situations that could result in property damage
or personal injury.
CAUTION
Situations that could result in severe injury or
death.
WARNING
Situations that involve a high risk of severe injury
or death.
DANGER
(Current as of Dec.2022)
Preparation for shooting
This product can only be used with AAA alkaline
batteries or AAA nickel hydride batteries. Do not
use other kinds of batteries.
The housing is equipped with two Fiber-optic Cable Connectors (sockets) and can be
used with either one or two strobes by setting the strobe selector switch in accordance
with the connected strobes.
Power switch
Battery installation
Connecting strobe(s)
1Push the Power switch for more than 2 seconds to activate the converter.
The converter is set to TTL mode
as shown by Blue light.
The converter will automatically
power off if the shutter lever or the
mode switch is not activated for
more than one hour. The
converter can be re-activated by
pressing the mode switch for more
than 2 seconds.
Low battery level is indicated by
flashing LED lamp. When the
light starts flashing, replace the
batteries.
Under some circumstances and
environmental conditions, where the
batteries voltage can fluctuate, the low
battery warning may not function. Use the
low battery warning as a rough indication.
Turn the switch by using a small flat-blade
screwdriver.
When 2 strobes are used, strobe selector
Switch (L / R) must be set on each strobe.
Take care to insert the batteries in the correct
direction.
By pressing the Power switch for a short time, the mode is changed to Manual as shown
by green light.
Pressing the Power switch for a short time will change the Mode.
Be sure to set the camera as below for TTL photography.
・ For better resolution, use ISO 400 and below is recommended.
・ Set the shutter curtain sync timing to 1st curtain sync.
*Refer to the camera's instruction manual for the setting.
Set the Be sure to set the camera as below for TTL photography.
・ For better resolution, use ISO 400 and below is recommended.
・ Set the exposure compensation to ±0EV.
・ Set the shutter curtain sync timing to 1st curtain sync.
*Refer to the camera's instruction manual for the setting.
Refer to the strobe's instruction manual for details.
In some cases when the external strobe(s) fire(s) continuously, the strobe(s) may not
keep up with the camera’s trigger signal resulting in inconsistent firing.
Under some shooting conditions, part of the image may not be entirely illuminated
(straight shadow may appear in images) due to the camera shutter closing before the
strobe(s) stop(s) emitting light. When this phenomenon occurs, improve or rectify it by
the following methods.
【 】Shooting conditions
・ Shutter speed is higher than 1/160 when exposure compensation function is used.
・ When trigger light (light from Optical YS Converter) is emitted at full or almost full.
【 】Solution
・ Set the light level control dial of the YS-D1 to 0.
・ Lower the shutter speed (of the camera).
・ Widen the camera's aperture.
・ Shoot in manual mode.
*Please proceed with either instruction mentioned above.
CAUTION
This product is only compatible with certain SEA&SEA products. Use of other
equipment will void the product warranty.
CAUTION
When installing or removing batteries,
thoroughly wipe water off this product and
dry your hands. Pay particular attention
not to allow water from your hair or
wetsuit to drip into the battery
compartment. This is in order to prevent
an electrical hazard, mold, malfunction or
flooding.
Remove the battery from the product
when not in use for a long period of time.
Manual photography
1Set the switches of the strobe for manual photography
2Adjust the amount of light for each strobe
Failing to do so may cause malfunction.
Set the switch to the strobe which you
would like to use.
Strobe selector switch (L / R)
Connecting the converter to the camera
2Insert the Fiber-optic Cable ll in the Fiber-optic Cable Connector
(Socket) till it stops.
1Remove the Fiber-optic Cable Connector (Socket) Caps
1Mount the camera in the housing.
(See the housing instruction manual.)
When installing or removing the Sync Connector, be sure to hold the connector part, if
you push or pull on the cord, it may damage the connector causing contact failure.
2Insert the Sync Connector into the camera’s accessory shoe.
3When closing the housing, please ensure the connector cord is
safely secured inside the housing.
TTL photography
Set the switches of the strobe for TTL photography
Specifications
*Specifications and appearance are subject to change without notice.
Battery Requirements AAA Alkaline x 2 : 3V / AAA Ni-MH x 2 : 2.4V
Continuous operation time Alkaline : 15hours / Ni-MH : 12hours (room temperature)
Accessories Instruction Manual (this manual)
Operatiing temperatures limitation
1 40℃～ ℃
2225-Z-01A
Power switch
/ Line indicator
SEA&SEA Co., Ltd.
4-8-11, Nagasaki, Toshima-ku, Tokyo, Japan
171-0051 TEL. +81-3-5926-9320
World Customer Service Center TEL. +81-3-5926-9322
http://www.seaandsea.jp
AAA alkaline or
AAA nickel hydride batteries
Battery box
Strobe Selector Switch
Sync connector
For safe handling of the product, please read the following precautions carefully before use.
Instruction Manual
Attention
External strobes cannot be triggered when the batteries in the converter
are spent. In order to avoid this, we strongly recommend freshly charged
batteries are fitted to the converter prior to diving, after every one-day use.
Sync connector
Battery box
Power switch/Line indicator
Strobe selector switch (L)
Strobe selector switch (R)
Maintenance and Storage
Never use chemicals, cosmetics, any petroleum solvents such as paint thinner, or neutral detergent
on the product. They may deform and damage the product.
Do not dry the product by heating (using a hair dryer, for example). Heating can deform and damage
the product.
If you will not use the product for an extended period of time, store it away from high temperatures,
high humidity, direct sunlight, or extreme cold.
Do not store the product with naphthalene or camphor mothballs, or in locations such as a laboratory
where chemicals are used. This environment can cause mold, rust, corrosion or malfunction.
Always remove batteries from the product after use.
Clean the light receiving and emitting parts of the Fiber-optic Cable ll, the housing and the strobe(s)
with a soft cloth or similar being careful not to scratch the parts.
Keep dry. The battery is not waterproof, and may malfunction if immersed in water or exposed to
high levels of humidity. Rusting of the internal mechanism can cause irreparable damage.
Do not remove and/or damage the case of a battery. It may cause battery leakage, overheating or
explosion.
Never use batteries should you notice any changes such as leakage, discoloration or deformation.
When you notice the situation as abnormal, discontinue use immediately and take the product to a
SEA&SEA authorized service center for inspection.
Keep out of reach of children to prevent accidental ingestion. If swallowed, seek medical advice
immediately.
Do not leave or use batteries in an extreme hot environment. This may cause battery leakage,
overheating or battery performance deterioration.
Avoid strong shocks/impacts or excess stress to batteries.
Dirt on the battery terminals can prevent the product from functioning. Should the battery terminals
become dirty, wipe them with a clean, dry cloth before use.
Turn the equipment off after use. Remove batteries from the equipment when not in use. Store in
dry area with temperatures ranging from -20℃ to 30℃ (-4°F to 86°F).
In some cases when the external strobe(s) fire(s) continuously, the strobe(s) may not keep up with
the camera’s trigger signal resulting in inconsistent firing.
Never expose the battery to flame or fire, or to excessive heat.
Never attempt to disassemble, alter or directly solder the battery. There are no userserviceable
parts. Tampering with battery may expose you to dangerous voltage, battery acid, or electrical
shock.
Never short-circuit the terminals of a battery, as it could result in battery leakage, heat generation,
fire, or explosion. Avoid contact with all metal objects during transporting and storage.
Never short-circuit the terminals of batteries installed in the product, as it could result in battery
leakage, heat generation, fire, explosion, or product malfunction.
Move leaking batteries away from fire or open flames immediately. The leaked fluid and its vapor
are combustible.
If the battery leakage contacts your skin or clothing, flush the affected area repeatedly with clean
water. It may irritate your skin. Should it get into your eyes, immediately rinse them with plenty of
water, avoid rubbing and seek medical advice.
Never attempt to insert the battery upside down or backward, as it could result in battery leakage or
explosion. Always confirm the direction of plus and minus before installation.
Never connect a battery directly to a plug outlet or car cigarette lighter.
Safety Precautions for Use of Battery
Identification of Parts
When using YS-D3, set the switch to the
position of YS-D1.
