supply of surface/recess mounted square model 1 x 1 20/18 w led panel light fitting , surface/recess mounted square model 1 x 1 20/18 w led panel light fitting crca/pvc hous ng system wattage - 24watts, luminaire system efficacy (lumen / watt) >/=120, ingress protection - ip20 operating voltage range- 140 to 270 volts ac at 50hz, rated voltage - 240 volt, 50 hz,ac power factor at full load >/= 0.95, driver efficiency >/=85% total harmonic distortion (max) 10% ,colour temperature (k 6000 +/-500k, 10) working life for led -minimum 50000 burning hours as per lm 80,colour rendering ind ex (cri) >/=70, led beam angle >/=120, operating temperature -20 deg c to + 50 deg c, protected again st surges and transients >/= 5kv, with minimum 3 years warranty certificate for free replacement. [ war ranty period: 36 months after the date of delivery ] ]