What is the strangest way you use your mobile phone?
Buy what you can afford but leather is expensive for just riding a little piece of poop. Above ankle work boots and work gloves are your cheapest/best protection, buy better as you get better. A helmet though is serious business in my way of thinking (and I only have half a brain) so dig into those pockets and buy the best you can afford..
Agree with answer above. When installing in the hallways, try to stay away from the bathroom doors. The humidity from the shower can set them off. Extremely high humidity in basements can sometimes be a problem. Better safe than sorry. Pays to have them.
Probably spiders. They can get in there and trip the sensors. Every few months my fire alarms start going off in the middle of the night and scare the crp out of me. Wish I had a solution but unfortunately I don't.
