Main Features:Universal input, the user can change the desired input signal.Users can switch Fahrenheit .F or Celsius .C according to their own needs. 1 set of control output (relay/SSR integral), the user can freely use relay output or SSR output. Thermometer signal input, digital display with the decimal point, minimum resolution is 0.1 .C/ 0.1 .F. Use the high-quality anti-interference chip. LCD display, concise and clear.101 series manual is suitable for MC401-611 thermostat. Specification: Input: K (default setting) Output: relay/SSR Accuracy Class: 0.5 Alarm: 1 Temperature Unit: Fahrenheit/Celsius Power Supply: 220 AC 50/60Hz Model Number: MC401-611 Operating temperature : 0-1300 Celsius Colour:Black Material:ABS+electronic components Size:80 x 9.60 x 10.00cm Package Contents: 1 x Temperature Controller 2 x Mounting Accessory 1 x English User Manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.