Horti King digital dimmable ballast The Horti King Pro Digital Ballast has rapidly become the most popular ballast in the Horti range. Constructed inside a sturdy aluminium cooling finned housing the ballast runs without a fan and is extremely quiet in its operation. The ballast has a fast start up and the bulb reaches maximum brightness very quickly The dimmable function allows the ballast to run different power bulbs from the same ballast for heat and light control of your room and also includes a power boost function for better results in the last few weeks. The ballast incorporates dynamic detection of load and power supply, protection for overload, overvoltage, load short/open, under voltage and lamp EOL. The ballast will run in relative humidity’s of between 10% and 90% and is IP20 dust tight with good protection. The ballast is designed to be wall mounted. Combined with the Horti King reflector and bulb, the Horti King Pro digital kit is a superior quality light kit at a budget price to suit amateur and professional growers alike.