Heavy-duty relays and Durable steel enclosure. 
Comes equipped with (2) 120V trigger cables to time the device
Comes with 1 delay timers built in (10 seconds later for 4 lights) 
Features 120/240V style outlets 
3 banks of 4 lights. Each bank is protected by a 30 amp circuit breaker. 
The HY-12X is rated for 90 amps@120/240V 
Operate multiple HID or fluorescent fixtures from a single controller or timer device.