Satechi ST2 Flash Trigger is ideal for mounting hot shoe flashes onto light stands. Standard shoe mount flash units can be mounted directly onto the integral hot shoe, which also provides the triggering power to the flash. Studio strobes may be fired from the PC Sync terminal on the side of the receiver. Four channels provide enough isolation from most other radio frequencies and enable you to work on a "closed" system. The unit is powered by long life AAA and 23A batteries and works on 433MHz at a distance of up to 100 feet (30 m.) in an open area.
^^ 4 channels to avoid interference. Comes with a transmitter and 2 receivers
^^ Working frequency: 433MHz Range: 100 feet (30m)
^^ Receiver includes 1/4"-20 tripod mount
^^ Response time: 1/500s -1/1000s (actual sync speed varies from 1/125s to 1/600s depending on the sync speed of flash / strobe)
^^ Compatible with Canon 580EX II, 580EX, 540EZ, 520EZ, 430EX II, 430EX, 430EZ, 420EX, 420EZ, 380EX, Nikon SB-900, SB-800, SB-600, SB-28, SB-27, ZB-26, SB-25, SB-24, Olympus FL-50R, FL-50, FL-36R, FL-36, Pentax AF-540 FGZ, AF-360 FGZ, AF-400 FT, AF-240 FT, AF-200FG, Sigma EF-530 DG Super, EF-530 DG ST, (for Nikon only) EF-500 DG Super, EF-500 DG ST (for Nikon only), EF-430, Vivitar 285HV, 283, DF-400MZ, DF-340MZ, Metz 36AF, 48AF, 58AF, Bower SFD35C/N, SFD728C/N, SFD328C/N/O, SFD680C/N, SFD926OC/N/O, SFD850, Phoenix ZBIS-112CII, SmartFlash 99c/n flashguns.