PID Temperature Controller with Dual Alarm Outputs, Built-in 2A AC SSR, SYL-2372

I spent hours trying to get one to control temperature in a test setup and was very frustrated with the lack of user control. This unit takes several minutes to respond to a change in temperature and the only 3 settings available to the user have some but little effect . One setting The P setting when it exceeds 1919 (supposed range 1-9999) causes a total malfunction and nonsense displays. Overall it did work to a degree but is very very slow and frustrating with the lack of user control. It might be useful if it had a setting to speed it up.