Special Features
Part number: m1: part series, 158: top temperature setting farenheit; 138: bottom temperature setting farenheit; 1: open on rise, silver contacts; 3: top mounting bracket; 2: plating, copper/nickel; weight with bracket: 5.9 grams; hermetically sealed, vacuum backed and back-filled with dry nitrogen, single ploe, single throw, normally open or normally closed, preset, non-adjustable calibration, high vibration and shock resistance
