Answer to yourself those questions:
- marketing & sales, or only sales
- what is the budget for that position
- look in the existing staff, somebody can do, sharing his / her time with else. check with several people
- spend your own time, trying to work as sales rep, in order to understand well, what this job is about
- try with somebody who does similar, with products from the same family. for example, he / she sells switches, you ask them to share with your lamps, as they visit the same customer
- when gather enough understanding about this role, go to recruiter and find the best one
all the best
Val