Surface-Mounted Optical-Electronic Security Detector IO309-28 "Astra-531" for Indoor Security

Surface detector security surface optoelectronic IO309-28 "Astra-531" IR version is designed to detect intrusion into the protected space of a closed room and the formation of alarm notification by opening the output contacts of the alarm relay, forms a surface detection zone type "vertical curtain" range of 5 m, miniature housing