JTY-GD-ZM992 intelligent photoinductor smoke detector; 900 series intelligent detector is a new generation of built-in central processing unit (CPU) developed by Shengsier Company according to market needs. This series of products adopts electronic encoding method and uses handheld encoder to set the detector address. The communication method is compatible with Shengsier Company's 200/500 series products. The base adopts a B901 base that matches the 900 series detector. It is screw-in installation, and two terminals are connected to the detector. *Drift compensation function: The detector can adjust the alarm threshold of the detector according to changes in temperature, humidity, dust, etc. on the site to ensure that the sensitivity of the detector does not change with the environment. *Sensitivity setting: The sensitivity of the detector can be flexibly set or adjusted through the controller according to the environmental requirements used, and is widely applicable to different environments*Self-diagnosis function: The detector regularly detects its own state, and can also detect its own state according to the instructions of the controller. Main features and technical indicators: *Ambient temperature: -10℃-50℃ *Humidity range: 5%-95%RH, no condensation *Working voltage: 15-32V *Quiet current:≤450uA *Alarm current:≤3.5mA *Difference: Diameter*Height=102mm*50mm.