The FA-2 LED Strobe Trigger triggers underwater strobes and flashes to fire in sync with the camera using fiber optic cables. 

Using the LED Strobe Trigger eliminates the need for the camera built-in flash to fire, thereby extending camera battery life and allowing for longer shooting sessions. Eliminating the camera built-in flash also keeps the camera from heating up, resulting with less condensation in humid conditions. The LED Strobe Trigger’s super quick recycle time allows for rapid shooting and triggering of the strobes without having to wait for the camera built-in flash to charge. 

 The FA-2 LED Strobe Trigger can be connected to any camera featuring a hot-shoe connection. It was designed to be installed inside Fantasea housings, but can also be installed inside other housings featuring sufficient space above the camera hot-shoe. 

The FA-2 LED Strobe Trigger is capable of triggering most underwater strobes available in the market. Note that when using the LED Strobe Trigger, strobe output is controlled manually only.
  
Specifications
LED type: Ultra bright white LED 
LED ports: 2 
Voltage: 3.7 V 
Power consumption: 5 milliwatt 
Battery: 110mAh Lithium Polymer battery 
Charging time: 1.5 hours 
Flash capacity: 10,000 (when fully charged) 
 Battery life: Up to 72 hours (when fully charged)
Auto power-off time: 3 hours 
Dimensions: 40.5 x 45 x 20.5 mm / 1.6 x 1.77 x 0.8 inch 
Weight: 16.8 g / 0.59 oz 
Included in package: LED Strobe Trigger main unit, LED cable, Spongy LED trigger ports, rubber band and USB cable
Important Notices
For best and most reliable performance, it is recommended to use the FA-2 LED Strobe Trigger with quality multi-core fiber optic cables available in the market.
The Sea&Sea YS-D2 strobe cannot be triggered with the FA-2 LED Strobe Trigger.