CAREL IR33W7LR20 Temperature Controller

CAREL IR33W7LR20 is a universal electronic digital temperature controller from CAREL's IR33 family, designed for refrigeration and HVAC systems with two relay outputs for direct control of loads such as compressors and fans. It accepts multiple sensor types, including NTC, PTC, and Pt1000 (Pt1000) probes, enabling compatibility with common temperature sensors used in food storage, climate control, and process monitoring. The unit can be powered from 12 to 24 VAC or 12 to 30 VDC (SELV), facilitating easy integration into standard control panels, and it is specified for a temperature range of 0 to 50 °C with relay contacts rated up to 250 VAC. As part of CAREL's IR33 platform, the IR33W7LR20 provides two-relay configuration for independent or simultaneous control of two loads in compact equipment enclosures. This makes it suitable for applications such as cold-room regulation, refrigerated display cases, and general temperature-control tasks within HVACR systems. Two-relay configuration enables straightforward control in single-stage or two-stage cooling setups.