Description: The remote trigger for studio flashes is used as the controller of synchronous trigger studio flashes of cameras. 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. 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. Specification: Material: ABS Size: Approx. 13.5x16.5x6cm Transmitter Power: 23A 12V battery Receiver Power: 2 AAA Battery (Not included) Maximum Working Distance: 30m (open area, without interference) Operates on Frequency: 433MHz Highest responding time up to 1/250s Triggering life: up to 30,000 times Suit for Canon Nikon cameras The trigger current is only 0.01 MA, which will definitely cause no damage to the flash contract of the camera. Package Includes: 1 x Transmitter 1 x Receiver Note: Not include the camera!