EMA (according to google) is an exponential moving average. It's essentially a curved line that follows the price of bitcoin. You're joining a 'line of best fit' on the graph of the price to see where the coin will go next. The line obviously (barely ever) touches the actual price as the price either shoots trhough it and goes above or goes below. There are point where it can stay somewhere in between but the ema still doesn't really touch it as it's normally projected as a ribbon.
The strong sell idea is due to the way that the price goes. The issue with having a strong sell is that the bitcoin price, like stocks and shares, doesn't always go the way these sites predict and these sites can contradict each other too.
https://uk.tradingview.com/symbols/BTCGBP/technicals/ - the four hour chart on here is in "sell", the daily is on "buy" and the 1 minute is on "sell". So these are just indicators based on statisitcs that some prices most likely have followed in the past but it's really anyone's guess where the price will go.
Thanks for the trading view gauges.
Pretty weird that results of technical analysis can be so different depending on the timeframes...
Now it's sell on 1 day, and buy for less than hour.
Finally, I don't even think these gauges can help in anything given it's so erractic. Or tell me how to use them