pentax + ext flash + infrared

[nimionsergei]

hello
i apologize if there's already this kind of topic out there but i couldn't find anything usefull for me using search

i'm using a pentax zx-30 film camera and want to buy an external flash
but the main thing which is really important for me is to use it on distance from the camera
so i need a infra-red sensor (that connects to the camera and to the flash?)
don't really want a wire...
can you please recommend anything cheap (don't want to spend a lot of money on it, need to try first).
so basically i need a cheap external flash that will work with infra-red sensor and also communicate with my pentax zx-30. oh by the way, a tripod thread is also important (to stick the flash on my tripod so the flash would light from the side)

thank you