Linkstar Plug-In Photo Sensor PS-35 3.5 mm With 6.3 mm Adapter

When you experience trouble with the slave function of your flash unit (flashing along with another flash), or there is no slave function available on your studio flash unit, you can use this flash sensor. Your flash unit reacts along with your infra red transmitter or other flash units. It is equipped with an adapter so the plug is suitable for both the large and the small sync connectors.