Mengshen Decibel Meter, Digital Sound Level Meter Handheld Audio Noise Meter Tester with LCD Display Measuring 30-130dB (Battery Included)M80

Main Parameters: Frequency Weighting: A Measurement Range: 30dB-130dB Accuracy Within +/-1.5dB Resolution: 0.1dBA Response Time : 0.5 second Operating Temperature: 0 ~ 40 ˚C (32 ~ 104 ˚F) Operating Humidity: 10 ~ 90 % R.H. Storage Temperature: -10 ~ 60 ˚C (14 ~ 140 ˚F) Storage Humidity: 10 ~ 70 % R.H. Dimensions: approx. 170 (L) x 58 (W) x 35 (H) mm (6.7 x 2.3 x 1.4 inch) Weight: approx. 107 g Power Supply: one 9V battery   Main Functions   Data hold function Max/Min display 15 minutes auto power off Large LCD screen display Package Content: 1x Digital Sound Level Meter 1x 9V battery   How loud is too loud? Government research suggests the safe exposure limit is 85 decibels for eight hour a day. Your hearing could be at risk of damage if you are continually exposed to high volume sounds. 20dB: Very faint, 40dB: Soft, 60dB: Moderate quite, 85dB: Limit 90dB: Loud, 100dB: Very noisy 110dB: Very faint, 120dB: Dangerous Wide Application Some Noises Source in the graph above: Neighbor Pet birds/ Car noise/ Wash Machine/ City Construction/ Music Instruments This decibel meter is great for industry and home use. It can easily measure the noise level from Household appliances, pets of neighbor, City construction, factories, offices, road cars and so on. Attention Please Measurement Tips: 1) When use device in outside, please mount wind-resistant ball on the head of the device to avoid effect from wind. 2) If you want to measure sound level from A, you can not ignore the influences from other sources. 3) Please measure several times to get a relatively steady reading. Please Attention: 1) Please take out the 9v battery if it not be used for a long time. 2) Please don't use it under a high temperature or humidity environment. Digital Temperature & Humidity Meter Digital Psychrometer Infrared Temperature Gun Digital Tachometer Wind Speed Meter Air Pressure Meter Part Number MS-M86 MS-M350 MS-M816 MS-M522 MS-M9819 MS-M1890 Measuring Range -4°F to 176°F(-20°C to 80 °C) -22°F to 199°F(-30°C to 100°C) -58°F to 1202°F(-50°C to 650°C) Contact:2 to 20000RPM; Non-contact:2 to 99999RPM 0.4 to 30.00m/s ±13.79kPa