Siemens-Temperature-Module-Relay-PT100-1000-3RS1040-1GW50-3RS10-Siemens-3RS1040-1GW50-P-The-Siemens-3RS1040-1GW50-Temperature-Monitor-Relay-is-used-for-monitoring-the-temperature-of-solid-liquid-&-gaseous-media-The-temperature-is-measured-by-a-sensor-in-the-medium-converted-by-the-unit-&-it-is-then-checked-if-the-temperature-is-too-high-too-low-or-within-a-specified-window-Depending-on-the-settings-the-output-relay-will-pick-up-or-drop-off-when-a-threshold-is-exceeded-Primary-ap