Wire connectors for Back of Push to Exit Button
Those look to me like "Faston(tm)" connectors (also called "spade" or "quick connect").  There are mating female connectors that slide over the male tabs.  These connectors are avaiable in several widths - most common is 1/4".

Searching for "faston connector" at Digikey or other distributors should find lots of compatible connectors.