Features: Remote trigger is a special trigger device for studio flash, using AC-220V or AC-110V power supply. Simple, remote controlled trigger with standby indicator and trigger signal indicator. Equipped with ultra-low pressure transmitter, saving battery; round ball hot shoe base contact design, fully protect camera contact. A variety of channel choices, 4 channels to meet different indoor working environment needs. International standard generalized 6.35 and 3.5 plug, can trigger all studio strobe lights and the external flash. The ball-shaped launcher contact is perfectly designed to protect the camera, direct use of AC100-240V power supply, dc ultra-low voltage trigger, with low energy consumption and high efficiency. It can adapt to various complex indoor environments and can be used in all directions, the remote trigger radius is 30 meters. Specification: Condition: Brand New Material: Plastic Color: Black Transmitters: 23A/12V Battery Receiver: 100-240V AC Channel: 4 Working Distance: 30m (Open area, without interference) Weight: Approx. 134 g Package List: 1 * Transmitter 1 * Receiver 1 * Adapter (3.5mm turn 6.35mm) 1 * Cable