Basic information:

• Model: YPS20
• Manufacturer Part Number: 1303180
• Type: Partition Sensor
• Technology: Infrared (IR)
• Range: up to 1.5 m
• Power Supply: DC 12–24 V
• Cable: 10 m
• Indicators: LED status indicators
• Designed for: Yealink CP960
• Color: Black
• EAN: 6938818321175

Simply put, it detects whether a movable room divider/partition wall is open or closed, so the Yealink system can automatically adjust its operation depending on whether the space is unified or divided.

Attention: This is not a smart-home door/window sensor; it is a specialized professional conference-room accessory.