ITEM NAME:WanSen DC-04 4 Channels Wireless Radio Studio Flash Trigger Set for Strobe Description: - The remote trigger for studio flashes is used as the controller of synchronous trigger studio flashes of cameras. It consists of a signal sender and a receiver trigger and works by means of the frequency modulation wireless remote control. - The Signal transmitter adopts the advanced circuit and components and can transmit the coded FM wireless signal. - Receiver trigger adopts dry battery for power supply, which is safe, energy-saving and convenient. The product adopts micro-computer for controlling the decoding, which has superior anti-interference capability; sensitive reaction speed, the highest synchronous speed can reach 1/250 sec. - The circuit of the transmitter has the fuction of standby and hibernation, thus it has low power consumpiton; the products can work under the standby mode for more than one year with only one battery; continuously trigger for thirty thousand times. The trigger current is only 0.01 MA, which will definitely cause no damage to the flash contract of the camera. - The transmitter is applicable to the traditional or digital carema with hot shoe or PC controlling interface. Specification: - Transmitter Power: 23A 12V battery (Not included) - Receiver Power: 2xAAA Battery (Not included) - Outdoor operating distance (open area): >30M / 90feet (open area, no fraise) - Indoor operating distance: >25M / 75feet - Frequency Channel: 4 - Operating Frequency: FM 433Mhz - Outdoor Synchronous Speed (open area): Max 1/250sec - Indoor Synchronous Speed: Max 1/250sec Package Included: 1 x Transmitter 1 x Receiver.The Signal transmitter adopts the advanced circuit and components and can transmit the coded FM wireless signal. - Transmitter Power: 23A 12V battery (Not included). 1 x Transmitter. - Receiver Power: 2xAAA Battery (Not included).