Carbon Monoxide Detector: Keep your loved ones safe with this reliable and portable air monitor. Durable ensures long-lasting use. Portable Air Monitor With Lanyard: Take this handy device with you anywhere to monitor CO gas levels and protect your health. HD display for easy reading. Smoke Alarm CO Gas Meter Temperature: Stay alerted to dangerous CO gas levels and monitor indoor or outdoor temperature with this advanced device. High sensitivity for accurate results. Humidity Sensor: Ensure a comfortable and healthy living environment with this humidity sensor. Fast operation speed for real-time readings. Indoor or Outdoor: This versatility device is for use both indoors and outdoors. Get accurate readings and date accuracy. Colour:White or Orange Material:Plastic Package Contents: 1 x 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.