Welthink 16825 250W HPS and Metal Halide Electronic Ballast- Pack of 4

250W HPS/MH Electronic Ballast, High power factor PF>0.99, Low harmonic General harmonic THD< 10%. UL/CUL listed.

• Match HPS and MH lamps automatically
• High light efficiency
• Low power consumption
• Constant power output: Constant power and light output when voltage varies between -15%-Plus15% of rating voltage
• Protection functions: Open circuit and short circuit protection.
• Easy installation: Easy to hang the lamp, No need any external starter and compensation capacitor
• Completely silent: No humming and buzzing
• Working temperature: -10Degree C-Plus40Degree C
• Approval: UL, CUL, EMC, RoHS
• Dimension - 16 x 11 x 13 in.

Data is based on operating a standard 250W MH/HPS lamp on a typical commercial 120V/60Hz power supply.