400V Grow Lamps are the next generation of HID lamps and output 10-25% more usable light than standard 240V grow lamps.
Dimmable in the same way as 240V lamps, they require a 400V ballast to power them. The main difference is the enhanced PAR output - up to 25% more plant usable light that can make a difference to yield when harvesting.
12 month warranty - please retain your original packaging to validate.