code: function blueRadiosAT(command){
  	if (! wsclient.listeners('notification').length) {
  		console.log('subscribe to RX notification');
  		//listen for notification response
  		wsclient.on('notification', function(peripheralId, serviceUuid, characteristicUuid, data) {
  	//		console.log("NOTIFICATION: " + data.toString('hex') + ' : ' + data.toString('ascii').yellow);
  			console.log(data.toString('ascii').trim().yellow);
  		});		
  	}
  
  	//convert command to hex, add CR (0x0d = \r) at the end
  	var hexCommand = new Buffer(command + '\r','ascii');
  
  	wsclient.notify(peripheralId, blueRadiosService,blueRadiosRxCharacteristic,true, function() {
  		wsclient.write(peripheralId, blueRadiosService,blueRadiosCmdCharacteristic, new Buffer('02','hex'), false, function(error) {
  			console.log('Switch to CMD mode');
  			wsclient.write(peripheralId, blueRadiosService, blueRadiosTxCharacteristic, hexCommand, false, function(){
  				console.log('sent CMD: ' + command.cyan);
  			})
  		})
  	});
  }
docs: command - string