Wireless LED sign trigger system

[samchurchill]

Hi all,

 

I'm looking for a wireless way of triggering a battery-powered LED sign (just some LEDs in the shape of a word) and wondered if any of you can recommend anything for this. Ideally it would just be a simple hand-held device like a garage remote. The range only needs to be about 10m, but through around 10 rows of people standing up.

 

In case you're interested, it's for reminding occasional speakers of mic technique once they're on stage, even after they've been reminded by the stage crew!

 

Thanks,

 

Sam

[timsabre]

Look on ebay, there's loads of radio controlled relay boards.

For example

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F282560031588

[Jivemaster]

Wireless door bell???

[beware]

Similar to a traffic light system. Run it down XLR with a switch at control.

[samchurchill]

Thanks everyone. I think I'm going to try something like @timsabre suggested - just couldn't find them as I didn't know what to search for!

 

Thanks again

[Owain]

the appropriate directive flashed until an improvement is obtained

 

http://i65.tinypic.com/jif8fo.jpg

 

Microphone direction box

 

(Public Address and Sound Distribution Handbook, Alex J Walker, Newnes, 1956)

 

(can someone resize the picture if necessary, please)

[adam2]

Yes, look on fleabay for "12 volt wireless switch" mains voltage units are also available, but I consider 12 volts to be safer for this sort of thing. Although primarily "line of sight" they will work with modest obstructions in the way. Get one with a very generous claimed range, remembering that this is probably in Chinese meters.

 

I have one, used to switch on additional external lights from indoors, I don't think that the exact unit that I have is still available, but fleabay is full of broadly similar units.

 

 

 

[sunray]

We carry thing like these for many of the random incidental just jobs.

 

https://www.amazon.co.uk/Status-Remote-Control-Socket-White/dp/B00NMD4QL6/ref=sr_1_3/257-9180833-1063928?ie=UTF8&qid=1525983747&sr=8-3&keywords=remote+plug+sockets&dpID=41Cvlvpy9oL&preST=_SY300_QL70_&dpSrc=srch