Now,now, you know he's easily upset
![Scared :scared:](https://www.eevblog.com/forum/Smileys/default/scared.gif.pagespeed.ce.oZptHNcbsD.gif)
But to be honest, you have to have a sense of humour in electronics, especially when you have a client who want's 10 changes, but only tells you one change at a time, when you've implemented the last change
![Banging Head |O](https://www.eevblog.com/forum/Smileys/default/bangheadonwall.gif.pagespeed.ce.8iLbFYV4Bc.gif)
And to be honest, i did so something similar with a window alarm
![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif.pagespeed.ce._hfWAz_QHO.gif)
We have two cats, and in the summer we leave the back door open for them to come and go as they please, but so did all the other cats. They all came hungry and went away full.
![Fighting :box:](https://www.eevblog.com/forum/Smileys/default/fighting0030.gif.pagespeed.ce.H3HVtgjLEV.gif)
So i knocked up a pir and a window alarm and a mirror so when the siren went off for a set 1/4 second i could look to see if it was our cats or the bungy nickers.
Anyway, on first trial, the youngest went to go out, so i watched for first impressions, casually strolled towards the door, pir saw him, hit the siren, well you should have seen the bugger move, I’ve never seen a cat jump so high vertically and then move backwards so fast, so fast in fact his front legs were moving backwards faster than his back legs, he ended up about 10 feet backwards from where the pir picked him up, he literally did a running back somersault ending up with his arse in air and his head on the floor. I couldn't help it
![Laughing :-DD](https://www.eevblog.com/forum/Smileys/default/smiley_laughing.gif.pagespeed.ce._hfWAz_QHO.gif)
Well, now it's just a dull beep
![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif.pagespeed.ce._JElyJQqdB.gif)
It's interesting though, if i hear a single beep, i know it's one of our cats, if i hear a series of beeps it's another cat hovering around the door.
Saved my a fortune in cat food
![Azn ^-^](https://www.eevblog.com/forum/Smileys/default/azn.gif.pagespeed.ce.7t5xC2ZH_H.gif)
And yes i have had bunnys, but ones that run around the garden and can see the sky, not locked in an apartment room with no fresh air.
![Smiley :)](https://www.eevblog.com/forum/Smileys/default/xsmiley.gif.pagespeed.ic.R8GFI-pF6f.png)