Based on the information you've provided, it seems you're describing a smart code locker lock with the model number SNEM512. Here's a summary of its features:

• Place of Origin: Guangdong, China.
• Brand Name: Not specified.
• Model Number: SNEM512.
• Product Name: Smart Code Locker Lock.
• Battery: Uses a CR2032, 3V battery.
• Material: Made of stainless steel.
• Unlock Method: Unlocked by a code.
• Application: Suitable for use in apartments, schools, hotels, and offices.
• Cylinder Length: Available in 20 mm or 30 mm.
• Weight: Approximately 0.3 kg.
• Compatibility: Designed for use with metal iron or steel lockers.
• Color: Silver with black accents.
• Door Thickness Compatibility: Suitable for door thicknesses ranging from 10 to 15 mm.

This lock appears to be a convenient and secure option for a variety of settings, particularly where multiple people need access to secure storage, like in educational institutions or professional settings. The use of a code for unlocking makes it a keyless system, which can be more convenient than traditional locks.