HaruDesign 2-Way Slow Control CO2 Speed Controller

This is a CO2-only dual-branch speed controller from HaruDesign (model 65MT-U-W).

I purchased it new a few months ago and used it to connect to a Silbon, simultaneously adding CO2 to two 30cm aquariums. It was working without any issues until recently.

You can simultaneously add CO2 to two aquariums from one Silbon or CO2 cylinder. The addition rate for each can also be finely adjusted.

The item includes everything shown in the photos (1 unit).
Instruction manuals are not included.

As this is a used item, please only purchase if you understand and accept this.

It will be shipped via standard mail (planned) after being wrapped in bubble wrap, as it is a small 35g item.
Returns are not accepted to prevent fraud.

Please feel free to ask any questions.

Below is from the HaruDesign website:
Manufacturer: HaruDesign
The low-speed control type solves problems such as difficulty in adjusting or instability with your current speed controller.
Pressure-resistant tubing with an outer diameter of 6mm can be used.
The outlet side comes with two low-speed control type speed controllers (65MT-U) x2 for dual branching.
Both axes can rotate 360 degrees (x2WAY), making tube routing very easy.
All three connection points use one-touch fittings. They lock simply by inserting the tube.