Thermal management controls heat within a lamp through component selection, electronic control, heat conduction, and dissipation through the housing. It helps maintain light output and protects the LEDs and electronics. Nordic Lights product data may also state operating-temperature limits and overheat protection. LED output and lifetime are strongly affected by junction temperature. A robust design moves heat through the circuit board and housing and may reduce drive current if temperatures become excessive. Ambient temperature, airflow, mounting surface, dirt, and nearby heat sources also influence operating temperature, so installation conditions must remain within the product specification.