Estimote app detects only 2 of 3 beacons

Hi, I just received my beacons. when I run the application only 2 of the beacons are detectable and one of them doesn't work at all. I wanted to know if there are anything wrong with it or is there any power button or something to make it work.
thanks very much

Hello,

There is no power button, but please drop me an e-mail at ula(at)estimote.com and I will try to help you.

Thanks!

keep your beacon in motion, and then scan it. More particularly if you are using sdk, try to find them using

[beaconManager startEstimoteBeaconsDiscoveryForRegion:region]

It will find all devices.