Carlo Gavazzi Monitoring Relay Temperature, Resistive (ETR), +20 to +80°C, S Housing, Plug-In, SPDT, Supply: 230VAC.
In conjunction with a remote sensor, type ETR, this S-system can be used to control temperature of heater or refrigerators. In the latter case inverted relay function should be employed as a precaution. The variable hysteresis makes control by the S-system extra flexible. The supply voltage must continuously be connected to the S-system.
General Characteristics
Temperature control relay for resistive temperature sensors, type ETR
Metering range: -20°C to +120°C divided into 5 sub-ranges
Separate adjustment of working temperature and hysteresis on two built-in potentiometers