Review on Baomain 4V210-08 DC 12V Pneumatic Air Control Solenoid Valve - Internally Piloted, Single Electrical Control, 5 Way 2 Position PT1/4 by Dee Holt

Valve work great but this is my first pneumatic solenoid I have ever used and there are no instructions on which port is in, out, vent power and none online. So it took me 30 minutes to figure it out. 2 ports on the top are out, center bottom is pressure in. other 2 are vent. power? there are 3 connections. The 2 facing the same direction with the ground symbol, yeah not grounds. not sure which is which but power to one ground the other. The 3rd connection? let me know if you figure out what that does. Makes a cool noise when venting which will be great for Halloween.