https://www.dahuasecurity.com/products/network-products/pt-cameras
Product Info
QB-50MF Quad Photobeam Detector

QB-50MF Quad Photobeam Detector

YU-HENG ELECTRIC CO., LTD.
Region: Taiwan
Update: 03/20/2007
Key Specifications
Features:

* Quad beams

* Multi-frequency

* Programmed A.G.C.

* Input Volt.: AC/DC 12-24V

* IP-55

* Sensing range (outdoors): 50m/100m/150m/200m/250m

* Laser beam alignment function (optional)

https://www.supremainc.com/en/hardware/ai-powered-biometric-terminal-biostation-3-max.asp?utm_source=asmag&utm_medium=banner_ad&utm_campaign=bs3-max-launch