The Flipbox® LSM-16 is 8 ballast, 16 light Flipbox® that allows you to run 16 lights from 8 ballasts. Convenient single unit with built-in timer allows for complete automation of switching between 16 lights from 8 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.