1. Tuya wifi system, real-time alarm information app push 2. Detect various gases (gas, coal gas, pipeline gas, , methane, propane, butane), and gases such as carbon monoxide 3. Gas concentration display on the APP 4. High-decibel on-site alarm 5. Three-stage prompts for early warning. It can be used independently without a gateway and direct connection to wifi. When the device detects gas leakage, it sound an alarm and send an alarm message through the APP to promptly notify the user. Detect combustion gases (natural gas, liquefied petroleum gas, methane) Adopt high-quality and stable-performing gas sensors Power Supply: AC110-240V Plug and play Rated power: less than equal 0.5w Power-on preheating time: 180 seconds Normal standby state: The blue light flashes once every Operating ambient temperature: -10-60 Ambient humidity: 0%-99%RH Gas warning value: 1500PPM-3500PPM Gas alarm value: 3500PPM-10000PPM Carbon monoxide warning value: 30PPM-180PPM Carbon monoxide alarm value: 180PPM-450PPM APP data detection time: once every 3 seconds Blue indicator light: Preheating state upon startup, normal standby indicator light: Distribution network Red indicator light: Alarm status Alarm methods: Local siren sound/flash /APP notification Alarm sound: 90 dB Detection range: 1.5m (radius) from the air source Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage:110-240V Color:As Shown Material:plastic Package Contents: 1 * Carbon Monoxide Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.