This is the blog of Ronald Bartels that wanders on and off the subject of problem management (that is how it started), but it is best described by Ray who says this is Daddy's thoughts! Like the best music is from the Eighties and a wee dram helps in solving most inconveniences.
Alarm system - the Awesome World of Things
Pope's battery-operated gadget may seem very simple from today's
point of view but it proved extremely effective against intruders. It
reacted to the closing of an electric circuit: doors and windows were
connected as independent units by a parallel circuit.