The biogas leakage alarm system consists of a controller and gas detectors, featuring easy installation and networking for centralized control of multiple monitoring points. When the concentration of biogas leakage in the environment reaches or exceeds the preset alarm value, the biogas leakage alarm will issue an alert to remind the user to take safety measures, thereby preventing and reducing the occurrence of accidents and avoiding hazards. It plays a protective role for your safety and property. Three-level alarm: Pre-warning, low limit/high limit alarms can be set. 4 programmable emergency buttons ("Linkage 1", "Linkage 2", "Linkage 3", "Linkage 4"). 4 groups of programmable relay contact outputs, outputting control signals respectively to link exhaust fans, solenoid valves, and other linkage equipment. Other detectors (4-20mA standard signal or passive switch signal) can be integrated into the system via input modules, facilitating easy system integration. Main Technical Specifications: Capacity: Total number of compatible detectors and input modules does not exceed 15 (%LEL) or 8 (PPM). Communication Mode: Four-bus. Display Mode: Digital tube and light bar. Operating Voltage: AC220V±15% (50Hz). Backup Power: 12V DC/2Ah×2. Power Consumption: ≤10W (excluding supporting equipment). 4 Groups of Relay Output: 3A/DC24V or 1A/AC220V (multi-functional, configurable). Signal Transmission Distance: ≤1500m (2.5mm2). Operating Environment Temperature: 0～40℃, Humidity: ≤93% RH non-condensing. Dimensions: 325×252×94 mm. Whole Machine Weight: Approx. 7kg. Supporting Equipment: Point-type Combustible Gas Detector JTQ-AEC2232. Point-type Combustible Gas Detector AEC2331. Toxic and Harmful Gas Detector JTQ-AEC2232, AEC2332. Input Module JB-MK-AEC2241(d)