yes it is switchable. both on bulb type and volts. mh/hps and 120/240 all that the ballast shows is the brand name the watts and the address of the company.tell me more about the ballast
break it down
switchable ?
then is fine to use that bulb i just wanted to make sure ballast was made for hpsyes it is switchable. both on bulb type and volts. mh/hps and 120/240 all that the ballast shows is the brand name the watts and the address of the company.