Product Features: The DN-D2000 household gas alarm adopts a high-quality gas sensor, combined with advanced electronic technology and exquisite craftsmanship; controlled by a microprocessor, it features high stability, long service life, and strong anti-poisoning capability; provides on-site audible and visual alarms, triggering remote networked alarm systems; features linkage devices for ventilation or shutting off the gas source, suitable for places in the home where gas is present. Product Introduction: The DN-D2000 household gas alarm adopts a high-quality gas sensor, combined with advanced electronic technology and exquisite craftsmanship; controlled by a microprocessor, it features high stability, long service life, and strong anti-poisoning capability; provides on-site audible and visual alarms, triggering remote networked alarm systems; features linkage devices for ventilation or shutting off the gas source. In any place where gas or toxic gases exist, once the concentration of gases such as liquefied petroleum gas, natural gas, city coal gas, carbon monoxide, hydrogen, etc. reaches the preset warning value, the alarm will faithfully emit audible and visual alarm signals to remind you to take effective measures immediately; or start the linkage device to ventilate or shut off the gas source to eliminate danger; effectively avoiding accidents such as fire, explosion, suffocation, and death. Technical Parameters: DN-D2000 household gas alarm????Working Voltage: AC220±10%　/　DC12V ??Suitable Gas: □Natural Gas □Liquefied Gas □Artificial Coal Gas????Operating Temperature: －10℃～50℃????Alarm Setting: ＜25%LEL　(Concentration can be specified by the user)????Ambient Temperature: -10℃～55℃????Humidity Range: ＜95/% ????Power Consumption: Static power consumption ＜1.2W, dynamic power consumption ＜2W ????Service Life: 3 years - 5 years????Response Time: ≤30S ????Recovery Time: ≤60S ????Application Place: Indoor????Protection Rating: 1P44