-------------------------------------Humidity & Temperature Meter---------------------------------- Features:  Data hold with Maximum and Minimum. Display the measured value at the large LCD display screen. LCD display with switchable backlight, easy for reading and convenient to use at night. Display the temperature and humidity at the same time, easy to exchange between ℃ and ℉.  Additional Functions: data storage, automatic shutdown, low battery indication and overload indication, high and low humidity alarm function. Compact Size and Light Weight: you can hold and carry it conveniently. Humidity and temperature meter is widely used in science and industry. Application included used in warehouse, home, office, school, business, air conditioning system, quality control system and laboratory, etc. Specifications:  Brand name: Smart Sensor Color: Black  Material: ABS Display: LCD Display Temperature measuring range: -10°C-50°C/14°F-122°F Temperature resolution: 0.1°C/0.1°F Temperature Accuracy: +/-1.5°C Humidity measuring range: 5.0%RH-98%RH (Humidity Sensor can’t dip in water) Humidity Resolution: 0.1%RH Humidity accuracy:(assume the temperature environment is 25+/-3°C) (5.0%RH-40%)+/-5%RH (41%RH-80%)+/-4%RH 81%RH-98%)+/-5%RH Refresh Rate: 2times/second Operation environment: 0°C-50°C≤80%RH(not condensing) Storage environment: -10°C-60°C:0%-90%RH Power Supply: 3 * 1.5V AAA Batteries(Not Included) Model number: ST9617 Item weight: 78g/0.17lb Item size: 15 * 5 * 2.3cm/5.9*1.97*0.9in Package weight: 119g/0.26lb Package size: 19.5 * 7.5 * 3.5/7.68*2.95*1.38in NOTE: Please don't store it at high temperature or humidity, high concentration salt or sulfur environment. If don't use it for a long time, please take off the battery to prevent leakage of battery. Please allow 1-3cm differences due to manual measurement. Package list: 1 * Temperature and Humidity Meter 1 * User Manual(English) -----------------------------------------------Anemometer--------------------------------------- Features:  This portable anemometer is a helpful measuring meter for wind speed and temperature measurement. Wind speed unit is switchable: m/s, km/hr, knots or mph. Temperature unit is switchable: Celsius(℃) or Fahrenheit(℉). Maximum, minimum and average Air Velocity value measurement function. Data holding and the current wind speed selection. LCD display with backlight ON/OFF, easy for reading. Low battery indication, automatic & manual power off function. Compact and light, convenient to hold and carry. It is suitable for measuring wind speed when generating windmills, ensuring safe navigation and making better use of wind power to generate electricity. Specifications:  Brand Name: SMART SENSOR Model number: ST9606 Color: Black Material: ABS  Air Velocity Range: 0.3～30m/s, 0.6～58knots; 1～108km/h; 0.7～67mph Air Velocity Unit: m/s, Knots, km/h, mph Resolution: 0.1m/s; 0.2knots; 0.3km/h; 0.2mph Accuracy: ±5%rdg±0.1 Temperature Range: 0～50℃ / 32～122℉ Resolution: 0.1℃ / 0.1℉ Accuracy: ±2℃ / ±3.6℉ Operating Temperature: 0-50℃ (≤80%RH) Storage Temperature: -10-50℃ (0~90%RH) Power Supply: 3* 1.5V AAA Batteries (Not Included) Item weight: 90g/0.2lb Item size: 16.5*5*2.7cm/6.5*1.97*1.06in Package weight: 131g/0.29lb Package size: 19.5 * 7.5 * 3.5cm/7.68*2.95*1.38in NOTE: Please don't store it at high temperature or humidity, high concentration salt or sulfur environment. If don't use it for a long time, please take off the battery to prevent leakage of battery. Please allow 1-3cm differences due to manual measurement. Package list: 1 * Digital Anemometer 1 * User Manual(English) -----------------------------------------Noise Meter---------------------------------------------- Features:  This instrument is high precision sound level meter, accuracy up to ±1.5dB. Temperature measurement function and Temperature unit selection(℃/℉) Red back light alarm and sound alarm function. This digital sound level meter with stable and reliable performance. Wide measurement range from 30dB to 130dBA. Data hold function, maximum and minimum value measurement. LCD display with backlight, convenient to use at night. Low battery indication, automatic & manual power off function. Compact and light, convenient to hold and carry. Equipped with sponge ball for sensor protection. Applications includes: Environmental measurement, law enforcement, work place design, sound level analysis of machinery and engines. Specifications:  Brand Name: SMART SENSOR Color: Black Material: ABS  Digital display: 4 digits Measuring Range: 30～130dBA Resolution: 0.1dB Accuracy: ±1.5dB (under reference conditions) Frequency Range: 31.5Hz to 8.5Hz Frequency Weighting: A Weighting Data hold: Maximum and Minimum hold Sampling Rate: 2times/s Temperature Measuring Range:-10°C-50°C/14°F-122°F Accuracy: ±2°C Resolution: 0.1°C Power Supply: 3 * AAA Batteries (Not Included) Operating Temperature: 0～40℃ (10%～80%RH) Storage Temperature: -10～60℃ (10%～70%RH) Item weight: 84g/0.19lb Item size: 15*5*2.8cm/5.91*1.97*1.1in Package weight: 157g/0.35lb Package size: 19.5 * 7.5 * 3.5/7.68*2.95*1.38in NOTE: Please don't store it at high temperature or humidity, high concentration salt or sulfur environment. If don't use it for a long time, please take off the battery to prevent leakage of battery. Please allow 1-3cm differences due to manual measurement. Package list: 1 * Digital Sound Level Meter 1 * User Manual(English) -------------------------------------------Lux Meter-------------------------------------- Features:  Mini lux meter with stable, safe and reliable measurement. Wide measurement range 1-200,000 lux and automatic/manual range shift. Measuring unit is switchable: Lux or FC. MAX / MIN / Data Hold functions, high accuracy. LCD display with backlight for easy operation in darkness. Low battery indication & Auto power off, energy saving. Data hold with Maximum and Minimum. Compact Size and Light Weight: you can hold and carry it conveniently. Specifications:  Brand Name: SMART SENSOR Color: Black Material: ABS  Display: LCD Display Measuring Range: 1-200,000 Lux Resolution: 1 Lux Accuracy:  ＜10,000 Lux(±4%rdg±10) ＞10,000 Lux(±5%rdg±10) Temperature Range: -10～50℃ / 14～122℉ Refresh Rate: 2 times/sec Repeatability: ±2% Operating Temperature & Humidity: 0-40℃ (≤80%RH non-condensing) Storage Temperature & Humidit: -10-50℃ (0-90%RH) Power Supply: 3 * 1.5V AAA Batteries (Not Included) Item weight: 95g/0.21lb Item size: 17*5*2.8cm/6.69*1.97*1.1in Package weight: 169g/1.37lb Package size: 19.5 * 7.5 * 3.5/7.68*2.95*1.38in NOTE: Please don't store it at high temperature or humidity, high concentration salt or sulfur environment. If don't use it for a long time, please take off the battery to prevent leakage of battery. Please allow 1-3cm differences due to manual measurement. Package list: 1 * Digital Lux Meter 1 * String 1 * User Manual(English)