Huion PW550 and PW550S pens

Buttons

These pens have two buttons which is typical for an EMR pen.

Pressure testing notes

I tested four PW550 series pens on 2024/08/30

• 1x PW500S

• 4x PW550

Pressure: IAF

I'm not good at measuring IAF but each seemed to be around 3gf.

Pressure: Max Pressure

• PW550 - 223.6gf

• PW550 - 560.0gf

• PW550 - 850.0gf

• PW500S - 735.5gf

Pressure: Response curve

As is typical for EMR pens, these pens have a response that bows up. All 4 hit 50% at around 100gf.

So as I often recommend, you should consider a pressure curve to linearize this response so that you have more pressure control at the lower end of the physical pressure range.

Photos