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Monitoring relay 22.5mm wide, over or under temperature, 0 to 1700 °C/F(minimum setting 10 °C), Thermocouple input type, One SPDT Protect your heating application This temperature monitoring relay was designed specially for monitoring abnormal temperatures to prevent excessive temperature increase and to protect equipment. K8AK-TH provides temperature monitoring in slim design with a width of just 22.5mm. Simple function settings using DIP switch Selectable alarm latch and SV setting protection Multi-input support for thermocouple or Pt100 and Pt1000 sensor input Changeover relay: fail-safe selectable Alarm status identification with LED