For indoor and outdoor useage. A built-in ambient light filter prevents interference from bright sunlight or false-triggering from flickering fluorescents. With "H"-prong (Household) connector and female PC socket.
- 360 degree reception; even works around corners and behind obstacles!
- The most sensitive photo slave available; range up to 3000' (914m)!
- All Ultra slaves feature standard PC terminal as alternative sync connector.