Air Conditioner Gas Charging Scale RCS-7020

Thank you for looking.
This product is a
Charging Scale for Air Conditioner Refrigerant
REFRIGERANT CHARGING SCALE
RCS-7020
Specifications:
Measurement Range: 0.000-100.000 KG
Accuracy: ±0.5%
Resolution: 5g
Power Source: 9V Battery
Operating Temperature Range: 0-45℃
Other: Display has backlight
Main Unit Size: 223x223mm (excluding display)
Weight: 2.485kg
Accessories:
Instruction Manual
006P (9V) Battery

I purchased this to recharge the refrigerant in my home air conditioners.
I used it to charge the refrigerant for three air conditioners,
and then it was stored as I had no further use for it.

When preparing to list it, I intended to clean it.
However, when I wiped the coiled cord with a towel dampened with cleaning solution,
the surface hardened and started flaking off.
It seems the cleaning solution was not suitable for rubber products.
Therefore, I wiped all parts except the coiled cord
without using any cleaning solution.
The wiring inside the coiled cord is covered with aluminum,
so there is no disconnection or contact failure.
I have tested the operation multiple times.
If this is a concern, you can wrap it with electrical tape or
self-amalgamating tape for use.

It's hard to tell how much refrigerant has been charged into the air conditioner just by looking, isn't it?
By placing the refrigerant can (cylinder) on this scale and charging,
you can see how many kg of refrigerant have decreased from the can (cylinder),
which tells you the amount of refrigerant charged into the air conditioner.
If the amount of refrigerant is too little or too much, the air conditioner's performance will suffer.
Charging the amount of refrigerant indicated on the outdoor unit is
optimal and will result in the best cooling.

Please try a DIY challenge!

Immediate purchase is of course welcome.

Shipping is included.