
This little device is easy to connect and works well. It comes with a clear plastic box, you can put it in or not, it's up to you. It's accurate and can be set when you want it on and off. I use it to turn a 12v greenhouse solar exhaust fan on and off depending on the temperature. The only downside for some is that it needs to be set in Celsius.

β Stainless Steel L-Square, Size 3-Inch x 4-Inch, Zona 37-434
8 Review

Kapro 307-08-TMS Try And Mitre Layout And Marking Square With Stainless Steel Blade, 8-Inch Length
18 Review

π² Johnson RAS-1B Johnny Square: Professional Aluminum Rafter Square, 7'', Silver - Top Quality with 1 Square
8 Review

π Johnson Level and Tool 400EM-S 12-Inch Heavy Duty Metal Combination Square for Professionals, with Inch/Metric Measurements, Silver - 1 Square
8 Review