I have been looking into using FCTN-RLY4-*** wireless relay modules that Linx sells that operate on the 433MHz band to activate some lights that will be used for a school project that I am doing. Basically, the project consists of 4 seperate boxes with a number of incandescent lights in them that are supposed to turn on and off wirelessly. The boxes have to be movable over a ~75ft range (which keeps me from using a simple wired relay system or anything but batteries) and are all meant to simultaneously turn on/off.
My thought was that the modules Linx sells would be the best bet, but I have some concerns. The first is that I am not familiar with exactly how line-of-sight the 433MHz band is and how well the signals pass through solid objects such as 3/4" plywood. I can find datasheets on transceivers that use the frequency range but nothing detailing the nuances of it.
Second, the module I am looking at is uses simple DIP switch interface between transmitter and receiver without a negative feedback loop. This is the reason I like them since all 4 boxes could be controlled with one controller. Is this thinking correct or am I missing something?
Third, I have not found any real reviews or opinions on the modules or Linx as a company. A big part of this project is reliability since this project will be used as part of a perfomance piece that will have to be done everyday for a month. How good are Linx products for continuous use applications and has anyone had trouble with their stuff?