China Classroom Loud Noise Decibel Reader Meter Manufacturers Factory Suppliers

1.Sound Level Measuring Range: 30～130dBA. 2.Resolution: 0.1dB. 3.Accuracy: ±1.5dB (under reference conditions). 4.Frequency Range: 31.5Hz to 8.5Hz. 5.Frequency Weighting: A Weighting. 6.Data hold:

GVDA EMF Meter GD189 is Professional Digital Electromagnetic Field Radiation Detector Tester with LCD , it is also Handheld Portable Radio Frequency Warn Meter for Home EMF Inspections Office Outdoor

GVDA 3 In 1 Digital Oscilloscope Multimeter Signal Source Ammeter Waveform Capture AC DC Current Voltage True RMS Multimetro

1. Max 4000 Counts . 2. NCV Measurement . 3. Non contact Phase sequence detection . 4.sampling speed: 3 times per second .. 5.Color LCD clear screen, easy to read the measured values..

Please be kindly noted, the listed product is produced and distributed abroad and subject to the laws of its country of origin.

1.Brand: GVDA Model: GD318. 2.oltage: AC 220V EU plug. 3.Output: 80W. 4.Temperature range: 80°C~480°C. 5.Temperature stability: ± 2°C. 6.Adjustable method: Knob. 7.Temperature unit: °C/°F. 8.Display

GVDA Digital Multimeter is an Professional Multimeter which can measure AC and DC voltage, AC and DC current, resistance, capacitance, continuity, diode, NCV,etc.; It is the best choice for

1.Detection voltage: AC voltage :12~1000V，50/60Hz. 2.Operating temperature：0~40℃ Storage temperature：-10~50℃ . 3.Safety compliance：CAT.III 1000V CAT.IV 600V；CE. 4. Battery：2×1.5V AAA Batteries. 5.

Electronic angle sensor, one key for angle and height measurement.. Large LCD backlight supports better visibility in low light conditions.. Electronic Level function, will show real-time refresh

GVDA Multifunctional Measuring Instruments can detect metals (Steel bar, copper pipe) and cables hidden in walls, ceiling and floors; Metal, Cable, wood, etec uner plasterboard, als it can measure

1. Lightweight and portable, easy to carry.. 2. Use ergonomics. It is easy and fast for user to use with simple key operation mode and comfortable hand feeling.

This professional portable combustible gas leak detector with visual leakage indicator, can detect gas leakage. All you need to know the high reliability testing instrument in the use of all kinds of

This product can detect a gas leak and interface with a control system, and it's suitable for Methane, Ethane, Propane, Butane, Gasoline, Natural Gas, Carbon Monoxide, Alcohol,Hydrogen, Acetone,

1. Portable detector for detecting all combustible gas.. 2. Gas- sensitive semi-conductor Sensor. 3. Audible semiconductor probe and auto fast warm-up.. 4. Instant response, pinpoint leak position

1.Sensor: Gas-sensitive semi-conductor. 2.Reaction Range: >50PPM (methane). 3.Warm-Up Time: Approx. 30 sec. 4.Reactions Time: Approx. 5 sec (500PPM). 5.Power: 2pcs, 1.5V, AAA battery. 6.Alarm Mode:

The intelligent precise oxygen detector use electri-chemical type gas sensor to measure the gas, can quickly response to oxygen gas, sound and light alarm level can be set manually.

1.Item Type: Oxygen Detector. 2.Battery: Lithium battery BPV4MBL5C 3.7V 1000mAh (built in). 3.Uses: Suitable for industrial, agricultural and residential environments and other places.. 4.Test Range:

1.Auto power off, alarm value set.. 2.℃/℉ unit switchable.. 3.Widely used in factory, home, office, and public place.

1. It is capable of detecting 4 kinds of gas: carbon monoxide(CO), hydrogen sulfide(H₂S), oxygen(O₂) and combustible gas(LEL).. 2. Premium material and selected top quality electronic components

Range: Electric: 0～2000mG; Magnetic: 0～200μT . Resolution: 1mG, 0.1μT . Test Bandwidth: 30Hz-300Hz . Sensing head: uniaxial . Accuracy: ±5% . Sampling Rate: 0.5 Seconds .