![Amazon.com : TOPHORT 600 Watt Ballast Digital Dimmable Electronic Ballast for HPS MH Grow Light Bulb Lamp (600W, Purple) : Patio, Lawn & Garden Amazon.com : TOPHORT 600 Watt Ballast Digital Dimmable Electronic Ballast for HPS MH Grow Light Bulb Lamp (600W, Purple) : Patio, Lawn & Garden](https://m.media-amazon.com/images/I/41BNtwSMVlL._AC_UF894,1000_QL80_.jpg)
Amazon.com : TOPHORT 600 Watt Ballast Digital Dimmable Electronic Ballast for HPS MH Grow Light Bulb Lamp (600W, Purple) : Patio, Lawn & Garden
![Amazon.com : TOPHORT 600 Watts Digital Dimmable Electronic Ballast for HPS MH Grow Light Bulb Lamp (600W, Blue) : Patio, Lawn & Garden Amazon.com : TOPHORT 600 Watts Digital Dimmable Electronic Ballast for HPS MH Grow Light Bulb Lamp (600W, Blue) : Patio, Lawn & Garden](https://m.media-amazon.com/images/I/61TWAvXp5JL._AC_UF894,1000_QL80_.jpg)
Amazon.com : TOPHORT 600 Watts Digital Dimmable Electronic Ballast for HPS MH Grow Light Bulb Lamp (600W, Blue) : Patio, Lawn & Garden
![Source High quality 400w high pressure sodium lamp(hps) ballast 50Hz high intensity gas discharge lamp(hid) ballast on m.alibaba.com Source High quality 400w high pressure sodium lamp(hps) ballast 50Hz high intensity gas discharge lamp(hid) ballast on m.alibaba.com](https://sc04.alicdn.com/kf/H1756a45dab1b4861ad9a8d6a96095102m.jpg)
Source High quality 400w high pressure sodium lamp(hps) ballast 50Hz high intensity gas discharge lamp(hid) ballast on m.alibaba.com
![220V Electronic Ballast Specialized For High-pressure sodium lamp 70W 110W 150W 250W 400W HPSL Dedicated Rectifier - AliExpress 220V Electronic Ballast Specialized For High-pressure sodium lamp 70W 110W 150W 250W 400W HPSL Dedicated Rectifier - AliExpress](https://ae01.alicdn.com/kf/HTB15ExnR8LoK1RjSZFuq6xn0XXao.jpg_640x640Q90.jpg_.webp)
220V Electronic Ballast Specialized For High-pressure sodium lamp 70W 110W 150W 250W 400W HPSL Dedicated Rectifier - AliExpress
![Amazon.com : eGrow 400 Watt Digital Grow Light Ballast for HPS MH Bulbs, Indoor Grow Lamps, Horticulture : Patio, Lawn & Garden Amazon.com : eGrow 400 Watt Digital Grow Light Ballast for HPS MH Bulbs, Indoor Grow Lamps, Horticulture : Patio, Lawn & Garden](https://m.media-amazon.com/images/I/617mytXIIbL.jpg)
Amazon.com : eGrow 400 Watt Digital Grow Light Ballast for HPS MH Bulbs, Indoor Grow Lamps, Horticulture : Patio, Lawn & Garden
Yescom 600W HPS MH Electronic Dimmable Ballast for Grow Light Bulb Lamp w/ Fan 2 Pack, 1 - Fry's Food Stores
![Amazon.com : iPower 400 Watt HPS MH Digital Dimmable Ballast Grow Light System Horticulture Hood Set, 400W Wing Reflector Kit, 400W, with Timer and Hanger Rope : Patio, Lawn & Garden Amazon.com : iPower 400 Watt HPS MH Digital Dimmable Ballast Grow Light System Horticulture Hood Set, 400W Wing Reflector Kit, 400W, with Timer and Hanger Rope : Patio, Lawn & Garden](https://m.media-amazon.com/images/I/81bgUVMQFgL.jpg)
Amazon.com : iPower 400 Watt HPS MH Digital Dimmable Ballast Grow Light System Horticulture Hood Set, 400W Wing Reflector Kit, 400W, with Timer and Hanger Rope : Patio, Lawn & Garden
![Universal Lighting Technologies S70MLTLC3M500K Universal Hid High Pressure Sodium Ballast 70W, Plastic, 0.452" x 0.452" x 0.452" - Electrical Ballasts - Amazon.com Universal Lighting Technologies S70MLTLC3M500K Universal Hid High Pressure Sodium Ballast 70W, Plastic, 0.452" x 0.452" x 0.452" - Electrical Ballasts - Amazon.com](https://m.media-amazon.com/images/I/81SKGNgVQJL._AC_UF894,1000_QL80_.jpg)