The attached system shows a control box with 8 RF channels.
Each channel can be paired with a small wireless LED box.
The control box can set the LED to ON\OFF remotely + indicates a connection status for the box.
The system should operate with <1Km range and 90 degree angle.
The control box is powered by 220V. The wireless boxes are battery powered.
What communication device (433/915/2.4) \ MCU \ Antenna setup would you recommend?
Edit:
I'm a programmer and electrical engineer with >10 years of experience. I would prefer a simple and cheap solution.
That looks good. A tip. Post all new, or added information, in the next/last post You make, not in the first. That's better the more of replies there might be.
You will likely use a power sawing controller for the wireless battery powered units.
More or less any controller would as base station. The amount of channels, 8, is central.
I'm not an Rf guy but there are several experienced helpers having knowledge about Rf. Give them some hours to finish their night sleep.
Is WiFi available at the remote locations? If so, then the solution is to use an ESP8266 at each LED location and control them over MQTT. Then your range is unlimited as long as you can get WiFi at each end. Could be cheaper since the ESP8266 can be had for $1 if you are willing to wait a month for a China purchase to get through U.S. customs. (I just realized that you didn't say where you are).
Line of sight is pretty much required for any RF solution. Definitely no trees or other foliage in the way, they're very good at blocking, it's easier to penetrate a reinforced concrete wall.
You quote a distance of 1km without saying where it is, the environment, indoors\outdoors, terrain etc.
There are quite a few RF solutions that you might get to cover the distance, but it depends entirely on the above.
See a 1000:1 rule;
LoRa is the obvious choice, whilst other RF methods might work, LoRa will typically go between 10 and 30 times further.
A working example of using LoRa with switches to remotely turn on LEDs is here, programs 21 and 22;
The transmitter 'remote control' is in sleep mode till a button is pressed, so you can arrange it that no power switch is needed.
I'm a programmer and electrical engineer with >10 years of experience. I would prefer a simple and cheap solution.
There might well be cheaper methods than LoRa devices, but its likely you might not get the range you need, so the project then becomes one where you spends a lot of time trying to improve the range of cheap devices that are not quite up to the job.
wvmarle:
Line of sight is pretty much required for any RF solution. Definitely no trees or other foliage in the way, they're very good at blocking, it's easier to penetrate a reinforced concrete wall.
Tests suggest that LoRa can work well enough through 'foliage'.
