The S8500 gas alarm controller is a multi-point monitoring gas alarm developed by our company to detect the concentration of the gas to be tested in the ambient air. When the concentration of the gas to be tested reaches or exceeds the preset alarm value, the control is controlled. The device immediately issued an audible and visual alarm to remind us to take safety measures in time and start the actuator to control the driving of exhaust air or other peripheral equipment to prevent poisoning accidents, explosions, and fires, thus ensuring the safety of life and property.