Dollar-cost averaging (DCA) means buying in pieces instead of all at once. When the price dips, each new purchase lowers your average entry price, so a smaller rebound is enough to get back into profit.
A DCA bot does this on autopilot with a ladder: a series of steps below the current price. Each step says how far the price must drop, how much to buy there and what profit to take when it recovers. Deeper steps can buy more, so your average cost falls faster the further the market dips.
Because Crypteller trades spot only, every step is paid for in full and the coins stay in your Binance account. A deeper dip means holding longer, not a forced sale.