Clover Station and Clover Mini (if on the Pro Service Plan) can be connected to and use the cash drawer via the RJ-11 6P6C cable.
Clover Mobile is designed to be mobile and is not designed to connect with a cash drawer via Bluetooth or other means.
The cash drawer is meant to be connected to one Clover device at a time (for the purposes of cash log tracking) but it can be opened at anytime with a cash drawer key.
Reference Site: https://help.clover.com/faq/do-clover-mobile-and-clover-mini-connect-to-a-cash-drawer/