Ballasts contain step-up transformers
and ignition circuitry. Ballasts are also available with combined timers.
These timers use relays and are rated for high load unlike cheap, external
timers. With our range of ballasts, noth High Pressure Sodium [HPS] and
Metal Halide [MH] lamps can be interchanged. All ballasts listed here
are suitable for all use with all High Pressure Sodium [HPS] and Metal
Halide [MH] lights shown here. For questions regarding ballasts and cabling
please contact Esoteric Hydroponics. Ballasts are tested before sale.
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