Honeywell L4006A1959 aquastat, opens circuit on temperature rise - adjustment set point 100-240f

Honeywell model L4006A1959 Aquastat Opens Circuit On Temp Rise Adj Setpt 100-240F Diff Fixed 5F Spst Direct Immersion Horizontal Mount Less Well Suitable For 3 In Or 1 1/2 In Insulation Immersion Well. Tradeline Vert Or Hor Mount 40-180F Adj. Set- Point Diff. 2F Fixed Less Well but with Well Adapter And Heat Conductive Compound. Minimize