Answer:
The HPC 21 is a dedicated single-button token dispenser configured for single-queue management and powered by a 9V / 2A DC adapter without an internal battery (they are not included). In contrast, the HPC 21B variant incorporates a 6 to 8 hour battery (they are not included) backup, while higher-tier models like the HPC 22 feature a 5-button interface for multi-department routing.
Within the HPC queue management hardware range, the HPC 21 serves as the baseline, high-throughput solution for single-stream queues such as outpatient registration counters, pharmacy pick-up desks, billing counters, and single-window service points:
- HPC 21 vs. HPC 21B: The standard HPC 21 is designed for steady continuous power via its included 9V / 2A DC adapter and operates without an internal battery (they are not included). The optional HPC 21B variant includes internal battery (they are not included) circuitry delivering 6 to 8 hours of backup during power interruptions.
- HPC 21 vs. HPC 22 / HPC 29B: While the HPC 21 utilizes a single push button to print serial tokens for a single queue, models such as the HPC 22 and portable HPC 29B feature 5 physical buttons to manage up to five distinct service categories or counters simultaneously.
- HPC 21 vs. HPC 55: The HPC 55 model adds dual-copy printing capabilities for workflows requiring both an internal audit receipt and a visitor token, whereas the HPC 21 prints a single serial token per push.
