I work nights, which is why I was sleeping at 12.07pm to be woken by a loud, piercing, brief electronic-sounding squeak. There was another at 12.08, then another at 12.09. I figured my clock radio was finally going round the bend, but when I pressed it to my ear there was no discernible difference in the sound. I turned the volume to zero with no effect and finally disconnected it (it has no batteries) to no effect.
I have checked both my smoke detectors in case they’re trying to alert me to low battery power. No effect. I timed the squeaks; they’re 55 seconds apart. I have poor directional hearing which is a curse in cases like this, but I thought I’d tracked the sound down to my bathroom, so I disconnected the only electrical thing in there: my dishwasher. No effect. Eventually I turned off all power in the apartment, but the squeak is still with me.
There’s a wardrobe next to the bathroom that’s my current best candidate for a source, but there is nothing in there that could reasonably start squeaking every 55 seconds. For a while I thought it was coming from next door’s since the bathroom and wardrobe are next to the shared wall, but I went out into the hallway and listened outside their door and no, as far as I can tell it’s my squeak.
I need ideas now. Brainstorm. Throw things at me. What the hell starts squeaking loudly and keeps squeaking every 55 seconds, on the clock?