Pump Control Comparison
They have the same starting pressure of 1.5 bar (22 psi) and maximum of 10 bar (145 psi).
Their maximum current is 10A.
The maximum temperature of these automatic pump controls is 60 degrees Celsius.
Until you physically see them, you would think they are the same pump. The TWPS102 however also comes with a gauge on the outside so that you can see what the pressure is currently set to, or how the pressure changes. The TWPS101 does not have a gauge.