Osram optotronic oti dali 75220 24024 1 4 ch this ballast has 4 channel dali converters with a dimming range of 0 100 luminous flux areas of application include luminaires of protection classes i and ii it is also suitable for seprate mounting and indoor applications dimensions and weight for this product are as follows length 22000mm width 462mm height 436mm product weight 35000g