Water Sport Series


Thermalution® Yellow Grade PLUS is the first power heated undersuit to endorse the ground breaking heating technology with a rechargeable wireless control system. It is an advanced model for longer, deeper dives.

Master the ocean.
Have you ever wanted to truly feel like you're in the driver's seat when underwater? The Yellow Grade PLUS will not only let you handle the wheel, it will also be your co-pilot and facilitate your every dive. With help such as this, championships will come; naturally.

No Power? No Problem.
Not only will the Yellow Grade PLUS be your co-pilot, it will also act as your personal pit crew, ensuring you get the best dive, every dive. Equipped with heavy duty batteries and a state of the art rechargeable wireless controller, the Yellow Grade PLUS will be the best diving team you can ever dream of.

Thermalution funtion Icon

Heating Zone
Icon_Time Battery duration may vary due to the temperature Sensor activities.
Continuous power output approximately 180-240 mins.

Just put down to charge up.
Wireless Charging Dock
Rechargeable Wireless remote controller

How to use ...


Push the battery connector through the hole of the battery pocket at the bottom. Place the battery inside the battery pocket.


Connect both connectors, wear the Yellow Grade Plus undersuit and affix the strap around your forearm and adjust the controller to a comfortable position.


Push the button upward once to adjust between the temperature settings. When the setting is on, the light will flash and the receiver will vibrate.

Yellow Grade Plus+ - Size Chart
size chart of sleeveless
Error value: ± 1 cm / 0.4 inch
In order to optimize the heating performance of the thermalution, we strongly advise our customers to wear smaller fitted sizes of the thermalution. Please refer to the size chart above to find the recommended size of Thermalution for you.
eg.: *When chest size is 33.7", please chose the XS size. / *When chest size is 109.5cm, please chose the L size.

! Please switch off the remote controller and remove batteries immediately while after diving.
※ In order to avoid signal disconnection under water, please use the wireless remote controller (P/N#SPE005-D) as close as possible to the back receiver of the under suit.

! When the wireless controller's battery is exhausted complately, it may cause the charging circuits to fail and prevent it from being able to charge completely.
In order to avoid this situation, please charge the remote controller after each dive. If this happened and your remote fails to work, please contact your local distributor to seek replacement.

Contact direct sales get quotation, or find your local distributor.
If you have any needs about Thermalution product, please >> contact us.
Thermalution Q & A
For more detailed information please visit our Q&A page.

Attention-Read Manual Read and fully understand operator's manual before using this product. Failure to follow operating instructions and any misuse of Thermalution products will create additional dangers.

Check Thermalution.com for updates and additional information. >> By creating an account you can free to download updated instruction manual for your undersuit! << Contact Thermalution if you have any doubts or difficulty understanding these instructions.

.Other product of Water Sport Series :
Green Grade Plus + Surf Series Blue Grade Red Grade Plus +
Blue Grade Plus + Compact Dive Series Red Grade Ultra