PSA to save some confusion
Little PSA from my recent experience so that no one else gets stuck outside, when I visited Chu recently the call box was broken. Chu threw me her key fob out of her window and I had to find it on the ground and then use it on the door to get in. Actually I still couldn't figure out how to get in until someone happened to be leaving the building because it wasn't clear that you were supposed to use the fob on the callbox. Hope this can save someone some wasted time and confusion.