Specification Alarm1 : Audible Alarm2 : Visual Brand : Santacary BulletPoint1 : CO2 range: 0~9,999ppm display. CO2 Accuracy: ±40ppm or ±3% of reading. Stable and accurate NDIR sensor for CO2 detection. Support ambient fresh air calibration (400ppm CO2) BulletPoint2 : Sound decibel measurement range: 30dB~130dB. Frequency response range: 20Hz~12.5kHz. Accuracy: ±0.5dB (94dB@1kHz). Frequency Weighting: A weighting BulletPoint3 : Audible and visual alarm for CO2.Two levels of instantaneous alarm BulletPoint4 : With temperature and humidity measurement BulletPoint5 : Including plastic carry case and power DC5V adapter Color : Ta652b ExternallyAssignedProductIdentifier : 7629320810774 ExternallyAssignedProductIdentifier1 : 0768564965295 ExternallyAssignedProductIdentifier2 : 768564965295 IncludedComponents : Carry case, DC 5V 1.0A adapter, English user manual ItemName : Air Quality Monitor CO2 Monitor CO2 Detector Carbon Dioxide Detector, Decibel Monitor Sound Noise Meter 30-130dB Range, Applications for Home, Classroom, Office, Factory, Hotel, Restaurant ItemPackageDimensions_Height : 1.81 inches ItemPackageDimensions_Length : 7.68 inches ItemPackageDimensions_Width : 6.69 inches ItemTypeKeyword : sound-and-noise-meters Manufacturer : Santacary Technology Co., Ltd. ModelNumber : HL-CD NumberOfItems : 1 OperatingHumidity : 97 percent PartNumber : HL-CD ProductDescription : Santacary HL-CD is a precise desktop device for monitoring carbon dioxide (CO2) concentration, noise level, temperature and relative humidity in indoor and outdoor environment. HL-CD can be widely used in the houses, office, school classroom, meeting room, restaurants, hospitals, and other places where carbon dioxide and sound decibel level monitoring in confined spaces for personal health and personal comfort is important. CO2 Specification: CO2 Measurement Range : 0~9,999ppm display CO2 Resolution : 1ppm / 0.01% CO2 Accuracy : ±40ppm or ±3% of reading Repeatability : ±20ppm @ 400ppm Sample Method : Diffusion Decibel Sensor Specification: Measurement Range : 30dB~130dB. Frequency Weighting : A weighting. Frequency Response Range : 20Hz~12.5kHz. Response Time : ≤1.5S. Stability : <2%. Accuracy : ±0.5dB (94dB@1kHz). Impact of Dust Cover : ≤0.5dB in the range of 50~115dB; ≤0.7dB else in the measurement range. MATERIALS SUPPLIED: (1) HL-CD desktop CO2 and Decibel Monitor (2) Carry case (3) DC 5V 1.0A adapter (4) English user manual Power Supply: 5.0VDC 1.0A Dimensions: 77x140x33mm (3.03x5.51x1.3”) Weight: 102grams (3.6oz.) without adapter ProductSiteLaunchDate : 2024-04-25T09:27:05.968Z SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1