This is a low cost PID controller. The listings indicate 12-24V AC, but this unit operates on 12-24V DC or AC. One of the nice features of this controller is the automatic tuning. The instruction that comes with the block isn't very clear, but if you have experience with PID controllers you can figure it out.
Kapro - 353 Professional Ledge-It Try & Mitre Square - For Leveling And Measuring - Features Stainless Steel Blade, Retractable Ledge, And Etched Ruler Markings - 12 Inch
23 Review
TV bracket Kromax DIX-18 black
52 Review
Kapro 307-08-TMS Try And Mitre Layout And Marking Square With Stainless Steel Blade, 8-Inch Length
18 Review
โ Stainless Steel L-Square, Size 3-Inch x 4-Inch, Zona 37-434
8 Review