NOTE: 1. The window and screen of the sensor must keep clean, if the sensor window is blocked or filtered by the water film, the measurement result may lower than actual gas concentration. 2. In order to ensure the safety and the proper use of the instrument, the operation and maintenance of the instrument can only be carried out by qualified professional. 3. Every day before use, please check the accuracy of the item in fresh air, ensure the measurement error is within the allowable range, If it exceeds, the item must be calibrated. Operation Instructions: 1. Press the power button for 2 seconds to Power on / off the item, the version of the product is displayed first, and then 10 seconds countdown (press the power button can skip countdown time). 2. Carbon Monoxide Tester reading page shows the current CO concentration, temperature, and the battery state. 3. In reading page, press the right button to switch the temperature unit C / F. 4. In reading page, press the power button to go into Menu ("Auto off" "Alarm"), press the up and down button to choose, In Auto off Mode, you can set "ON" or "OFF", and then left key to return, choose the "Alarm" key, In this mode, you can set Low and High CO "ON" or "OFF", and can set "Buzzer" and "Vibrator" "ON" or "OFF". Specifications: Screen: LCD Screen Measurement Range: carbon monoxide :0-2000ppm Temperature Range: -15 to 50degree Temperature Accuracy: +/- 1.5 degrees Celsius Measurement Unit: CO: ppm, Temperature: F / C Alarm: sound, light, vibration Alert parameters(the default parameters can be set): LO: 35ppm, HI: 70ppm. Power supply: 3/7 AAA alkaline batteries (not included) Size: 120x65x25mm Weight: 150g Color: Yellow Authenticate: CE, FCCC, RoHS Package List: 1 x Carbon Monoxide Detector 1 x Packing Box

• MULTIFUNCTIONAL CARBON MONOXIDE DETECTOR: CO: 0-2000PPM, temperature: -15 to 50 degrees Celsius, can detect CO concentration and measure your daily life temperature
• WIDE APPLICATIONS: For diesel, metallurgy, chemical, municipal, sewage treatment, electricity, gas, mining, tunnel construction, firefighting, storage, and other aspects that need to detect toxic gases.
• SOUND, LIGHT,and VIbration WARNING: high / low concentration alarm, Sound, lighting and vibration three level alarm modes, give you all-round protection.in addition, you can set the sound and vibration on / off to satisfy your needs.
• SWITCHABLE CELSIUS F/C UNIT: Temperature units F / C options, to give you convenient operation.
• SIMPLE, PORTABLE AND DURABLE: Big LCD display, it can work in night, High Strength, Dust proof, Explosion proof.

MULTIFUNCTIONAL CARBON MONOXIDE DETECTOR: CO: 0-2000PPM, temperature: -15 to 50 degrees Celsius, can detect CO concentration and measure your daily life temperatureTONOR