Feature:1. Using High Sensitivity Gas Detection Probe, Stable Signal And High Precision.2. The System Adopts A PumpType Probe, And The Air Is Pumped Into The Sensor By A Fan, Which Has Better Response Speed And Higher Accuracy Than The Ordinary Diffused Sensor.3. Wall Type Exquisite Appearance Design, Simple Installation, Saving Space.4. Black Shield Wire, Waterproof, Oil Proof, Strong Anti Interference Ability, Stable Signal Transmission.5. It Has The Characteristics Of Wide Measuring Range, Good Linear Degree, Easy To Use, Easy To Install And Good Versatility.6. This Transmitter Is Widely Used In Environmental Monitoring Series, Pm2.5/10 Particle Concentration Detection.Specification:Condition: 100% Brand NewItem Type: Pm2.5 SensorMaterial: AbsColor: As Shown In The PictureSize: Approx.10.8X4Cm / 4.3X1.6In(Length X Height)Weight: Approx.257G/9.1Oz Parameter Technical Index Power Supply 12-24V Dc Average Current ≪85Ma Pm2.5/10 Measuring Range 0-1000Ug/M³ Pm2.5/10 Accuracy 10%F·S Temperature Measurement Range 40°C80°C Temperature Accuracy ±0.5°C Humidity Measurement Range 0-100%Rh Humidity Accuracy ±3%Rh Stability ≪2%F·S Nonlinear ≪1%F·S Response Time ≤120S Preheat Time 2Min (Available) 10Min (Maximum Accuracy) Warranty 2 Years (Machine) / 1 Year (Probe) Output Signal Rs485 Power Consumption ≤1.2W (@12V Dc, 25°C) Working Pressure Range 0.9-1.1Atm Interface Description:Wide Voltage Power Input Can Be 12-24V. When Wiring The 485 Signal Line, Note That The A/B Lines Cannot Be Connected In Reverse, And The Addresses Between Multiple Devices On The Bus Cannot Conflict. Line Color Description Power