| Configuration A | 4 × AA alkaline batteries | 18–24 months at approximately 150 activations per day | IP65 claimed Dust-tight and protected against low-pressure water jets | Infrared sensor; 5–15 cm adjustable detection range | Hands-free operation, automatic shut-off, no handle contact | Typical flow rate of 1.9–2.0 L/min; approximately 50–70% less water than a continuously running 6–8 L/min tap | RMB 90–160 Battery replacement and periodic aerator cleaning | Low | Best balanced option for public washrooms |
| Configuration B | 4 × AA lithium batteries | 30–36 months at approximately 150 activations per day | IP65 claimed Suitable for splash-prone installation when correctly sealed | Infrared sensor; 8–18 cm adjustable detection range | Hands-free use, anti-false-trigger control, automatic hygiene flush | Typical flow rate of 1.8–2.0 L/min; strong water-saving performance | RMB 130–220 Higher battery cost but less frequent replacement | Low | Best for low-maintenance facilities |
| Configuration C | 4 × AA alkaline batteries | 12–18 months at approximately 200 activations per day | IP65 enclosure available Installation quality is critical around the battery compartment | Infrared sensor; 3–10 cm detection range | Touch-free activation and automatic shut-off | Typical flow rate of 2.0–2.2 L/min; approximately 45–65% water reduction compared with a conventional 6–8 L/min tap | RMB 100–180 More frequent battery replacement under heavy use | Medium | Suitable for medium-traffic commercial washrooms |
| Configuration D | Integrated AC adapter with battery backup | 36–60 months for backup batteries; mains power is primary | IP65 sensor housing claimed Adapter and cable connections require dry installation | Infrared sensor; 5–20 cm adjustable detection range | Hands-free operation, adjustable run time, automatic shut-off, optional hygiene flush | Typical flow rate of 1.9–2.0 L/min; stable performance during high usage | RMB 80–150 Lower battery expense, but electrical inspection may be required | Medium | Best for high-traffic sites with available power |
| Configuration E | 2 × AA alkaline batteries | 8–12 months at approximately 150 activations per day | IP65 not always confirmed Verify the sensor and battery-compartment rating before purchase | Infrared sensor; fixed 5–8 cm detection range | Touch-free operation and automatic shut-off | Typical flow rate of 2.2–2.5 L/min; moderate water-saving performance | RMB 150–260 More frequent battery changes and possible sensor cleaning | Medium | Budget option; less suitable for wet or high-traffic environments |