Home > Products >Desktop CO2 monitor> ZG1683R(U)  
  ZGkb301 / ZGkb201p
  ZG9 series
General Introduction
3 IN 1 CO2 Monitor (CO2+Temp.+RH Operating


LCD Display
Warm-Up Time: 2 MIN. Using the MUTE function
Safety Instructions Caring for product
Specifications Installation Instruction


Fault Codes & Troubleshooting Guide
Available Packages
3 LED Display:
 < 800 ppm  800~1200 ppm  > 1200 ppm
General Introduction
Indoor Air Quality (IAQ) is measure for the quality of air in interiors, the comfortable indoor environmental quality can make people feel fresh, work efficiency and good for the health. The CO2 concentration is the important factor of good indoor air quality. People breath in oxygen and breath out CO2, nowadays people often close the windows to avoid noise and enjoy the comfort living and working environment provided by air-conditioning systems, which results in the fact that the indoor concentration of CO2 is far higher than outdoor average. With the high CO2 concentration and non- proper ventilation, people will feel headaches, dull, drowsiness, lose of concentration and correspond to the high levels of dust, chemicals and bacteria in the air.
3 IN 1 CO2 Monitor (CO2+Temp.+RH) Operating Instructions

ZG1683R/ZG1683RU CO2 monitor are smart, compact and easy-to-use. In addition to measuring the CO2

  concentration, they can also measure the ambient temperature and the relative humidity (CO2+Temp. +RH).
  These products are developed to detect the presence of CO2 in ambient air and help people to take care of
Indoor Air Quality. they can be widely used in the office building, school, exhibition hall, shopping mall, meeting
  room, fitness center, restaurant and other public places where personal comfort, healthy is important. 
Dual Beam NDIR technology to improve the long term stability
Measure CO2, Temperature and Relative Humidity
3 LED display shows the current Indoor Air Quality
Press “MUTE“ for alarm on/off
Built in the LCD Backlight for easy reading in the dark

Datalog Function: Connect to PC (ZG1683RU)

LCD Display
  1. Green LED Display
  2. Yellow LED Display
  3. Red LED Display
  4. Mute Button
  5. Power Inlet
  6. Housing Stand
  7. Screw Position
  8. Ventilation Slots

Readings may be affected if the unit is operated within radio frequency electromagnetic field strength of

  approximately 3 volts per meter, but the performance of the instrument will not be permanently affected.
  Note: Under the electromagnetic field of 3V/m, the reading will not meet the specification.
  Warm-Up Time: 2 MIN.
  1.2 min. warm-up time when first time power.
2.The LCD shows 4 bars with 1sec blank cycle during
3. The MUTE button is disabled during warm-up
  4.The device shows the CO2 reading after warm-up
  Using the MUTE function
  Press MUTE button to select buzzer on/off. If the “MUTE”
function is off,  while CO2 concentration exceed the
alarm level (>1200 ppm), there will be a buzzer.
Note: The device setting with alarm is buzzer on when
power on first time, user can set the alarm on/off under
  MUTE function.
  Connect to PC with data log function
  Firstly, connect the device to PC. Download the software from  and get more details.  
  Safety Instructions
  Warning: Your safety is very important to us .To ensure to use the product correctly and safely, we would like to

draw your attention to read the warning and entire User Manual before using the product. These are important

  safety information and should be observed at all times.
  Caring for product

To ensure you receive the maximum benefit from using this product, please observe the follow guidelines.


1. Cleaning— Disconnect the power before clean. Use a damp cloth, do not use the liquid cleaning agent, such

  as benzene, thinner or aerosols.

2. Repair----Do not attempt to repair the product or modify the circuitry by yourself. Please contact with the local


dealer or a qualified repairman if the product needs servicing.

  3. Air diffusion: The ventilation slots on the housing are designed for CO2 diffusion, so these ventilation slots
  should not be blocked.
  Method - Dual Beam NDIR  
  Display - LCD  Independent CO2, RH and Temperature readings  

Sample Method - Diffusion or flow through (50 ~200 ml/min)


CO2 & Temperature & RH Specification:

CO2 Measurement Range 0-3,000 ppm display
Display Resolution 1ppm at 0~1,000ppm; 5ppm at 1,001~2,000ppm; 10ppm at 2,001~3,000ppm
Accuracy Under 25°C: ±80 ppm or ±5% of reading (≦2000ppm); ±7% reading (>2000ppm)
Repeatability ±20 ppm @ 400ppm
Temperature Dependence Typ. ±0.2% of reading per °C or ±2 ppm per °C, whichever is greater, referenced to 25°C
Response Time About 2min for 63% of step change
Warm-Up Time 2 min. at 22°C
Zone LED Display Green: <800ppm; Yellow: 800~1200ppm;Red: >1200ppm
Temperature Temperature Range 0°C to 50°C (32°F to 122°F) display
Display Resolution 0.1°C (0.1°F)
Display Options °C/°F
Accuracy ±1°C( ±2°F) When the fan blows to the device directly, the accuracy of temperature is + / -1.5 degC
Response Time 20-30 minutes (case must equalize with environment)
RH Measurement Range 20%-90% RH
Display Resolution 1%RH
Accuracy ±5%RH@23°C
Response time <5 min for 63% of step change
Operating & Storage condition Operating Temperature 0°C to 50°C (32°F to 122°F)
Humidity Range 0 ~ 95% RH non-condensing
Storage Temperature -20°C to 60°C( -4°F to 140°F)
Power Supply Power Supply USB or 5 VDC from external AC/DC adapter which is included
in package (Use specified AC adapter only)
DC Output voltage 5 VDC, 1000mA
AC Input voltage & Frequency 100 ~ 240 VAC, 0.2A  50 / 60 Hz
Communication interface
( ZG1683RU )
Version USB 2.0 low speed function
OS Windows XP ,Windows 7
Installation Instruction
1. You can use ZG1683R(U) on the table (please pull out the Housing Stand ) or hang it on the wall.
2. Please note the following when hanging it on the wall.
  Choose a suitable location to install ZG1683R(U), fix the screws to the wall. Please see「Dimension
section to check the distance between the screws.
Fault Codes & Troubleshooting Guide
This section includes a list of Frequently Asked Questions for problems you may encounter with the ZG1683R CO2 Monitor.
Fault Icon Description of the fault Suggested Actions
The ambient temperature has exceeded the operating temperature range 0°C to 50°C (32°F to 122°F) This error will clear when the temperature returns to the range between 0°C to 50°C (32°F to 122°F).
EEPROM System Problem

Please reconnect AC adapter to CO2 Monitor.
If the “Er5, Er6” still appears,
please contact the Service
Department for further assistance.

Kinds of Adapters for your option
(for European ,
GermanItaly )
(for British,
including Singapore、
BS1363 )
(for Australia
New Zealand)
(for American ,
including JP、CN)

Available Packages
  Dimensions: 137*99*28mm
  Weight : 186g
  Adaptor + Mini USB Cable Weight :
  U.S Type: 103.55g
  EU Type: 113.55g
  U.K Type: 108.85g
  A.U Type: 108.5g
  One Set Included:
1 CO2 Monitor
1 Power Adaptor
1 User Manual
1 White Box
1 PE Bag
    (Package CO2 Monitor & Power Adaptor)
  One Carton Included:
Q'ty: 20pcs PaperBoxes
White Box Size: 245*155*60mm
Carton Size:
  U.S / EU Spec.: 532*330*365mm; 2.26 Cube ft
  U.K / AU Spec.: 525*330*365mm; 2.26 Cube ft
  U.S Type Power Adaptor: 9.1kgs
  EU Type Power Adaptor: 9.3kgs
  U.K Type Power Adaptor: 9.2kgs
  A.U Type Power Adaptor: 9.2kgs
  U.S Type Power Adaptor: 10.7kgs
  EU Type Power Adaptor: 10.9kgs
  U.K Type Power Adaptor: 10.8kgs
  A.U Type Power Adaptor: 10.8kgs