- Pin compatibility: pins from different brands vary in diameter. Our thermostat controller matches pins 0.19-0.21 in (4.8-5.3 mm). If your pin diameter is outside this range, the connection may be poor or fail. Check pin diameter before purchase. - Probe dimensions: Please review gallery images to ensure the thermostat controller fits your appliance or heating element. Probe diameter: 0.31 in (8.0 mm); probe length: 1.97 in (50 mm); probe material: stainless steel. A dimension drawing is attached in the Product Description. - Specification: 125 V, 15 A; 16 AWG adjustable controller thermostat probe cord; cable length 750 mm (29.53 in) with a flexible power cord; temperature rating: 155 ± 10 C. - Application: Suitable as a replacement for household electric smokers, fryers, grill heating elements, electric skillets, and similar appliances. Household use only. Do not immerse in liquids.