Square recessed panel luminaire, Tunable White, Zigbee. Product features: Ready for connection to BIOLUX HCL control unit. Adjustable color temperature via Tunable White: 2,700…6,500 K. Wireless communication between control unit and luminaries via ZigBee protocol. Color rendering index Ra: > 90. Product benefits: BIOLUX HCL luminaire combined with BIOLUX HCL control unit provides lighting solutions for individual requirements. Biologically optimized lighting by adapting artificial light to natural daylight course. 5 years BIOLUX HCL system guarantee when operated as part of a BIOLUX HCL system (BIOLUX HCL CONTROL UNIT in combination with BIOLUX HCL luminaire(s)). Can support working with more concentration. Good glare reduction (UGR < 19). Areas of application: Single room solution for up to 20 BIOLUX HCL luminaires combined with BIOLUX HCL control unit. Meeting and conference rooms. Offices with little or no daylight. Equipment / Accessories: LEDVANCE BIOLUX app required for commissioning only (available for Android and iOS).