This is a new battery powered hands free flush valve. This item is still in its original box with instructions and wrench included.

Some information from online:

• SLOAN SENSOR RETROFIT: Sloan sensor side-mount retrofits easily convert existing manual flushometers to touch-free sensor operation, reducing surface contact in commercial restrooms and enhancing hygiene. Upgrade your restroom facilities with Sloan Sensor Side-Mount Retrofit for a seamless transition to touch-free operation and improved sanitation.
• OVERRIDE FLUSH BUTTON: The EBV-500-A side-mount retrofit features a non-hold-open true mechanical override full flush button, allowing manual flushing when needed.
• INFARED SIDE MOUNT SENSOR: The EBV-500-A side-mount retrofit is equipped with a battery-powered infrared sensor, enabling automatic "No Hands" operation for improved hygiene and convenience.
• EXTENDED BATTERY LIFE: The EBV-500-A side-mount retrofit has an estimated battery life of three years when operating at approximately 4000 cycles per month, providing long-lasting performance without frequent battery replacements.
• 72-HOUR SENTINEL FLUSH: This side-mount retrofit is equipped with a 72-hour sentinel flush feature, ensuring the system is periodically flushed even when not in regular use to prevent stagnant water and maintain optimal hygiene.
• AUTOMATIC RANGE ADJUSTMENT: The EBV-500-A side-mount retrofit sensor is equipped with automatic range adjustment, ensuring reliable detection of users and minimizing false activations.
• LOW BATTERY INDICATOR: The side-mount retrofit is designed with a "Low Battery" flashing LED indicator, alerting users when the battery level is running low and needs replacement.