Anybody heard of UCASH by UOB Kay Hian?

From the description, it is similar to other cash management services like FSM Auto-Sweep, Phillip SMART Park. It is intended to temporarily park your cash while waiting for investment opportunity.

Basically the cash you park with UCASH will be used to buy unit trusts like money market funds, short term bond funds, etc. When you need to use the money, UCASH will liquidate part of the unit trusts to give you that money.