Trolmaster DST 1 Temperature Station bulbs A horizontally mounted bulb is 4364 A horizontally mounted bulb is often preferred because most of the light is reflected straight down High temperature dimming and safety feature shut off Event logging Independent sunrise and sunset settings Independent light cycles and Programmable External Contactor Modules (ECMs) on the EL2 Temperature Device Station（DST 1） The TrolMaster DST 1 Temperature control modules allow the user to easily connect and control standard heating or cooling devices to the Hydro x Any heating or cooling device that is 10 amps at 120 volts or less can be controlled by the DST 1