V-Great VG-6623 Conventional Optical Smoke Detector (hereinafter referred to as Detector) is a product developed with integrated MCU and a reliable fixed fire judgment program that makes it work stably and reliably. When detecting fire signals, the detector changes its own supply current to transmit the signal to the control panel or interface module. The detector lights fire indicator and remote indicator to show the alarm and will hold them until reset. The detector is developed base on the infrared scattering principle and high-performance optical sensing chamber. It is excellent in resisting dust contamination and ambient light interference with stable performance and is easy to maintain.