You should check the white label on the AP that says either AP-103(-RW) or IAP-103(-RW). The APIN0103 is a regulatory part number which is used to certify the hardware and as the hardware is shared between the AP (needs controller) and IAP (can work as Aruba Instant cluster without separate controller), the actual product type is on the white label:
The -RW suffix is the regulatory domain (RW = Rest of World, US = United States), the AP-103 does not have such an extension as the regulatory domain is bound to the controller.
If you own an AP-103, you will need a controller to operate it.