ios - What's the difference between CLBeacon and CBcentralManager -

i want detects beacon/ibeacon devices near iphone's proximity. not sure class should use

should use clbeacon , clbeaconregion , start monitoring region

or

should use cbcentralmanager , scanforperipheralswithservices

which api suited best use case ?

i have tried find online it's not documented anywhere

although ibeacons use bluetooth low energy (ble), not treated ble peripheral in ios. handled via corelocation framework, classes need cllocationmanager, clregion , clbeacon. refer core location programming guide

cbcentralmanager ble peripherals such heart rate monitors, fitness trackers (or else can think of want exchange data peripheral)