The XMTD-2201 is a robust, reliable PID controller once you understand its logic. The key takeaways from this manual are: Bookmark this page on your phone or print it out for your workshop.
To change advanced settings (like sensor type or alarm limits): Press and hold for about 3-5 seconds. The PV window will show a parameter code (like Use the arrows to change values and to cycle to the next parameter. To exit, hold again or wait for it to time out. Need the full wiring diagram?
Disconnect all power before wiring. Improper wiring will destroy the unit or cause fire. Refer to the sticker on top of the actual unit, as terminal assignments vary by manufacturer clone.
Unlike modern smart-home thermostats that guide you through an app, the