Door handle in my kitchen looped four times. Recorded with a tascam dr-05x. Noise reduction applied with a dose of vintage warmer. Is it warmer? i don't know.
Assembled in reason 12. 44hz 16bit 120bpm. This pattern is made to be sliced up. I tried to stay away from eqing the sound so there would be flexibility with post processing.
The most uniqe door-bell i ever found. Made of 3 differet bells. The sound captures opening and closing the gate door which triggers 3 different bells. Probably it won't fit for your purpose but if so let me know in comment section:).