Interfit INT492R Hot Shoe Receiver Description. The Interfit INT492R Hot Shoe & Strobe Flash Trigger Receiver 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 & enable you to work on a closed system. The unit is powered by long life batteries & works on 433 M Hz at a distance of up to 100 30 m in an open area. This is an additional or replacement receiver & requires the use of the Strobies Transmitter which is sold as part of INT492. Note Sony Minolta flashes require STR114 to work with this item