The ability to control the wall pack lights is possible using an external controller, which can accept multiple commands. Control options include changing the level of brightness and color temperature.
Never pay down a deposit in a bank account until you have met the seller, seen signed a purchase agreement. No serious private advertisers ask for a down payment before you meet. Receiving an email with an in-scanned ID does not mean that you have identified the sender. You do this on the spot, when you sign a purchase agreement.