I was searching for an alternative vacuum cleaner to use with my Two Trees TTC450 PRO CNC, after reading negative feedback about their own vacuum cleaner that I was considering to buy.

I opted to buy Bosch GAS 12-25 PL, 1250W 220V because it has a nice feature Auto Start and Auto Stop. It works this way: the GAS12-25 PL vacuum cleaner has outlet where you plug the device that you want to turn on the the vacuum cleaner will start automatically as soon as your turn your device on.

I was afraid that feature will not work with Two Trees TTC450 500W Spindle, because its power supply needs to be on (powered) all the time to communicate with the TTC450 Pro control board. But it worked fine, the vacuum cleaner feeds some current to the Spindle power supply and it detects when the Spindle starts to run and then turns on automatically. Really cool indeed!