‘Thermalert® 4.0 series, -40°C to 2250°C


The Thermalert 4.0 series of integrated infrared temperature sensors provide accurate temperature measurement for a wide variety of process control applications. Wide temperature ranges from -40 °C to 2250 °C , advanced signal processing, wide choice of focus distances

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Infrared Temperature Solutions

Key Features 

  • Key Features
  • Conforms to Industry 4.0 standards
  • Integrated laser sighting
  • Galvanic isolated outputs
  • Plastic lens option for food application
  • Analog input for ambient compensation and adjusting emissivity setting
  • USB for easy setup
  • Simple, two-wire or digital installation
  • Backward compatibility to old Raytek®  sensors and accessories

Downloads:   Data sheet    Manual      Brochure

Additional information


Low: -20 to 600°C, Low: -40 to 1000°C, Medium: 200 to 1000°C, High: 500 to 2000°C

D:S & Optics

15:1, Standard focus, 33:1,Standard focus, 33:1,Close focus1(76mm), 50:1,Standard focus, 60:1,Standard focus


2 wire, 4-20mA, 6 pin, RS485, 12 wire M16 connector


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