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Air Quality Transmitter, Multi  Air Quality Tester 10-30V  For Indoor

<ul><li>High Performance: This product adopts high accurate sensor, which has the characteristics of wide measurement range, linearity, versatility, convenient use, long transmission distance</li><li>Accurate Temperature and Humidity Acquisition: Temperature acquisition, accurate measurement, the range can reach -40 degrees Celsius to 80 degrees Celsius . Humidity acquisition, the range can reach 0-100%, and the measurement accuracy is high</li></ul>

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Specification: Item Type: Temperature and Humidity Transmitter Material: Plastic Weight: Approx. 194g/6.84oz Size: 110x70x38mm/4.33x2.76x1.50in Coding: 8 bit binary Data Bits: 8 bits Parity Bit: None Stop Bit: 1 Error Checking: CRC Redundant Cyclic Code Baud Rate: 400bit/s, 4800bit/s, 9600 bit/s can be set, the factory default is 9600bit/s DC Power Supply Default: 10 to 30V DC Power Consumption: Less than or equal to 1.2W（12V DC, 25 degrees Celsius ） Average Current: ＜85mA Transmitter Circuit Working Temperature And Humidity: -40 degrees Celsius to +60 degrees Celsius , 0%-95% non condensing Temperature Measurement Range: -40 degrees Celsius to +80 degrees Celsius Temperature Measurement Accuracy: ±0.5 degrees Celsius Humidity Measurement Range: 0-100% Humidity Measurement Accuracy: ±3% Air Pressure Measurement Range: 600-1100HPa Barometric Pressure Measurement Accuracy: ±0.5HPa CO2 Measurement Range: 0-5000, 10000ppm（Default range 0-5000） CO2 Measurement Accuracy: ±20ppm PM2.5/10 Measuring Range: 0-1000ug/m³ PM2.5/10 Measurement Accuracy: ＜read numbers±10%25 degrees Celsius Output : 485 Stability: ＜2%FS Nonlinear: &lt;1%FS Response Time: Less than or equal to 120S Wiring Instructions: Power Supply: thread color: Brown, instruction: V+; thread color: black, instruction: V- : thread color:yellow, instruction:485A; thread color: blue, instruction:485B Application: Widely used in various environmental monitoring, can a variety of elements, and has a variety of output methods, which is convenient for use in various environments, safe and reliable, beautiful in appearance, easy to install, and durable. Common problems and solutions The device cannot be connected to the PLC or computer Possible reason: 1 The computer has multiple COM ports, and the selected port is incorrect. 2 The device address is wrong, or there are devices with duplicate addresses the factory default is all 1. 3 Baud rate, check mode, data bit, stop bit error. 4 The 485 bus is disconnected, or the A and B lines are reversed. 5 If the number of devices is too large or the wiring is too long, power supply should be provided nearby, add a 485 booster, and at the same time increase a 120 Ohm terminal resistance. 6 The USB to 485 driver is not installed or damaged. Package List: 1 x Expansion Tube 4 x Screw 1 x Transmitter 1 x Instruction Note: <div>Note: The factory default 0.6m wire, pay attention to the wire sequence, do not reverse the wire sequence, when the device is connected to the 485 bus, ensure that the addresses of multiple devices will not be repeated.</div>

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