Ragowar mai watsewar da'ira mai aiki tare da ƙimar halin yanzu na 4P shine na'urar lantarki da ake amfani da ita don kare amincin kewaye. Yawanci yana ƙunshi babban lamba da ɗaya ko fiye da lambobi masu taimako, waɗanda zasu iya cimma ayyukan kariya don kurakurai kamar nauyi, gajeriyar kewayawa, da zubewa.
1. Kyakkyawan aikin kariya
2. Babban dogaro
3. Hanyoyin kariya da yawa
4. Tattalin arziki da aiki