I can't see the driveway entrance from my office so whenever there is a delivery I don't usually know about it until it's already too late.
This easy to install device has fixed that problem. It is wireless, has a sender and receiver unit which can be sited quite some distance apart, mine are about 20 meters away.
Whenever someone or something passes though the beam the chime sounds in the house alerting me.
It's refreshingly simple and it works, It even have a volume setting.
Batteries are not included so you'll need to order some, the sender unit uses 3 x AAA size and the receiver 3 x C size.
Excellent bits of Kit. Have used them for 3 years. Traffic, cats, rustling leaves, will set them off, so getting the angles right is important. Being woken up every morning early thinking there's a prowler during vendeange is a lesson in itself. If you want one for the post box, a circuit breaker would probably be a better idea. Think cupboard magnets. Somehting like this? http://www.crimepreventionproducts.co.uk/home-security/door-window-alarms/door-window-alarm-with-chime
Can this be put inside a post box? Our post box is not visible from the house, I assume the road traffic would set the alarm off, so if I put the sensor in the post box it should only alarm when more mail (or junk mail) arrives. Would this work? I'm a wheelchair user so pointless trips in the rain etc to check for mail are a real pain hence the question!
Can't beat a dog. Well you can, but shouldn't! Mine is doorbell, burglar alarm, fitness coach, all in one. Apart from that he's a mad, useless SOB. I sometimes wonder how good life would be if I had a clever dog.........
My dog used to do that for me Mike but he is now too old. When people knock on the door, he wakes up and then barks solidly for 5 minutes to hide his embarrasment at having been caught out. Will be checking out James' suggestion.