Security is one of the few discounts you control
Deadbolts, monitored alarms, cameras and lighting are rated, and the reductions are real because the claims reduction is real. Unlike most rating factors this one responds to a decision you can make this month, and the discount frequently outruns the cost of the equipment over a few years.
Theft claims are settled on evidence
After a burglary the carrier asks what was taken and what it was worth. Without receipts, photographs or serial numbers that becomes a negotiation from memory, and memory consistently understates. Ten minutes with a phone camera is the cheapest claim preparation available.
Category caps bite hardest on theft
Jewelry, cash, firearms and electronics carry theft sub-limits well below the contents limit. Those caps apply specifically to theft rather than to all losses, which makes them most relevant here. Scheduling the significant items removes the cap.