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The EC Sense ES1-SO2-50 Sulfur Dioxide Gas Sensor is a cutting-edge solid polymer electrochemical gas sensor, known for its extended lifespan and durability. Notably, it operates without any power consumption and boasts a compact design. This ES1-SO2-50 Gas Sensor is specifically engineered to detect Sulfur Dioxide gases, which are crucial to detect in various applications. When paired with the EC Sense Smart Digital Board, it simplifies integration, eliminating the need for labor-intensive sensor calibration.

Principle Solid Polymer Electrochemical Sensing Technology Detec�on of gas Sulfur dioxide gas Detec�on Range 0-50ppm； Resolution: 0.1ppm Lowest Detec�on Limit 1ppm Full-scale accuracy error ± 5% F.S Se�ling �me The first power-on under storage in clean air <120 seconds The first power-up under storage in non-clean air <180 seconds (except in the presence of high concentrations of polluted gas) Return zero �me <120 seconds (through 99.999% high purity nitrogen) Response �me T50: <10 seconds; T90: <30 seconds Calibra�on Gas Sulfur dioxide standard gas 30ppm Note: the standard gas uses air as the background gas Note: Temperature (0-25) ℃, Humidity (30-70)% RH, the measured gas concentration is within the range, and there is no gas environment that affects the warm-up time mentioned above Sensor expected life �me >3 years Atmospheric concentra�on limit 1 hour mean (level 1) ≤ 0.15 mg / m3 ; 1 hour mean (level 2) ≤ 0.5 mg / m3 ; Humidity measurement range: (10-95)% RH. non-condensing Relative error: ± 2% Temperature and humidity sensor Data Temperature Range: (-40-85) ℃ Relative error: ± 0.2 ℃ Interface definition: VCC- Red, GND- Black, RX- Yellow, TX- Green; Baud rate: 9600 Data bits: 8 bits Stop bits: 1 bit Output The standard output is: 3.3V UART digital signal (see below for communication protocol) ; Optional custom Modbus protocol Return to Q & A mode after power off or switch power mode See next page for details Get data command The communication is divided into active uploading and Q & A. The default is Q & A mode after power-on. You can use instructions to switch between the two modes. Repeatability <2% Working temperature （-40 - 55）℃ Op�mal working temperature （20 - 35）℃ Working humidity （15-95）% RH. （Non-condensing） Working Voltage 3.3-5.5V DC Working Current < 5mA Power Consump�on 25mW @ 5V DC Op�mum working humidity 50% RH. Working pressure Atm ± 10% Circuit board size 40X30X5.6（mm） Module size With ES1 sensor: 40X30X12 (mm); With ES4 sensor: 40X30X22.45 (mm) Weight TB200B-ES1-SO2-50-01＜15g；TB200-ES4-SO2-50-01＜25g Warranty 12 months from the date of shipment 

Digital ZM106-VOC Module is a general purpose, compact module. The module uses a semiconductor gas sensor with MEMS process to detect the concentration of VOC gas in the environment. The module has high sensitivity and adopts digital signal output, which is convenient for users to use and test, and greatly shortens the user's design and development cycle.