Johnson Controls A19DAC-12C Penn Series A19D Surface Mounted Temperature Control 100 to 240 Degrees F Temperature Range and Scale 10 Degrees F Differential

The A19D Series Surface Mounted Temperature Controls are reliable, durable On/Off temperature controls with line-voltage single-pole, double-throw (SPDT) switches. The A19D Series Controls are designed primarily for fluid piping applications and include two adjustable mounting straps for mounting the control directly to a pipe.
SPDT switch action provides either high or low temperature detection
Sealed, dust-protected switch provides reliable and durable On/Off control for commercial and industrial applications
Color-coded electrical terminals simplify wiring the controls
Sensing element insulated from the control case minimizes the effects of ambient temperature on the control set point
Convertible range adjuster kit provides knob, screwdriver, or concealed adjustment options