ZKTeco USA Multi-Technology HID Proximity Card Reader with Integrated Keypad and Single-Gang Wall Box Mount (KR502H)ZKTeco's KR502H proximity card reader is ideal for any access control scenario where you are limited to a narrow mounting surface where a standard proximity card reader would be too large and bulky. This particular model can be mounted on flat surfaces or on single gang wall boxes. The KR502H is the only model in the KR500H series with an integrated keypad. This gives you more control over your access control system by opening the door to multiple