There are two fridges in the venue. The large one is in the kitchen and the smaller one is under the printer in the PC room.
Members use both fridges, but the larger one in the kitchen is often used during large events by guests (for example people cooling drinks during the monthly house party) - the fridge in the PC room is generally reserved for members and is alarmed during big events.
The alarm is intended as a reminder/warning. It should generally be left off and only turned on for certain busy events.
It's located at the bottom left (edge of the door) on the fridge in the PC room. If it's armed, it will sound whenever the fridge is opened and stop when the fridge is closed.
It can be armed by holding the top button for 2 seconds. It is disarmed by holding the bottom button for 2 seconds.