Item.: VT-S2A-2A2 Power: 60watt Voltage: 12-24VDC Sensing way: Door Trigger Cable length: 1500mm
https://www.everluster.com/Built-in-12V-and-24V-micro-fit-door-trigger-infrared-sensor-with-double-head-107.htmlItem.: VT-S2A-A2 Power: 60watt Voltage: 12-24VDC Sensing way: Door Trigger Cable length: 1500mm
https://www.everluster.com/Single-head-built-in-installation-12V-and-24V-micro-fit-door-trigger-infrared-sensors-108.htmlItem.: VT-S2A-A3 Power: 60watt Voltage: 12-24VDC Sensing way: Door Trigger Cable length: 1500mm
https://www.everluster.com/single-head-12V-24V-surface-mounted-infrared-door-triggerinfrared-sensormicro-fit-106.html