This is automatic sensor urinal flush valve. It has several key features:
Hands-free, hygienic operation using an infrared sensor.
Water-saving design, typically using 1.2-5 liters per flush.
Built-in filter and vandal-resistant components.
Powered by either DC 6V (e.g., 4 AA batteries) or AC 220V.
A 24-hour automatic flush feature protects the trap seal when not in use for a long period.