220V AC Standalone Coal Gas Leak Detector with Natural Gas Alarm Relay, NC/NO Output

General Description: The AC 220V standalone natural gas leak detector is designed to detect the presence of coal gas and natural gas. It must be installed close to the gas source, within 2.5 m. This device is equipped with an alarm relay with NC and NO outputs, allowing for easy integration into existing security systems. Technical Specifications: Supply Voltage: AC 220V; Output Type: NC/NO Relay; Recommended Installation Distance: ≤ 2.5 m from the gas source; Alarm Threshold: 6% LEL; Installation: For correct installation, ensure that the power supply and signal cables are properly connected to the detector. Turn on the device and follow the initialization steps. Operation: The detector operates as follows: Warm-up state: Red LED flashes once and the speaker emits a sound. Normal state: Green LED flashes once per minute for approximately 3 minutes. Monitoring state: Green LED remains continuously lit. To test proper operation, press button S1 on the PCB. If the red LED illuminates and the speaker emits a sound, the detector is functioning correctly. In case of gas detection, the LED turns red and flashes, and the speaker emits a beep whose frequency depends on the detected gas density. Other information: Conditions of use: Do not install outdoors or in humid locations. Avoid areas of strong air circulation, such as near fans or doorways. Keep the detector clean by removing dust and moisture. In case of malfunction, check the input and output line connections. The warranty will be void if the product is opened by the user.