The Flipbox LSM-8 is 4 ballast, 8 light Flipbox that allows you to run 8 lights from 4 ballasts. Convenient single unit with built-in timer allows for complete automation of switching between 8 lights from 4 ballasts. Voltage independent - works with 120 Volt and 240 Volt ballasts. Fits Sunlight Supply style ballasts. Detachable trigger cord can override the built-in timer so Powerbox can be controlled by your own timer or other devices. Hand-built at their California factory.