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Probing for families, environmental harmful gas detection devices , suitable for ammonia, aromatic compounds , sulfur compounds, benzene vapors, fumes and other gases harmful gases , gas sensors tested concentration range : 10 to 1000ppm
Module features :
1 , using high-quality dual-panel design, with power indicator and a TTL signal output instructions ;
2, with a DO switch signal (TTL) output and analog output AO ;
3, TTL output valid signal is low . ( When the output low signal light , can be directly connected microcontroller or relay modules )
4, the higher the voltage, the concentration of the analog output voltage is higher.
5 , air quality , hazardous gas detection has better sensitivity .
6 , there are four screw holes for easy positioning ;
7. Product Dimensions : 32 (L) * 20 (W) * 22 (H)
8 , having a long life and reliable stability
9 , rapid response and recovery characteristics
Input voltage : DC5V Power ( current ): 150mA
DO output : TTL digital 0 and1 ( 0.1 and 5V)
AO output: about 0.1-0.3V ( relatively clean ) , the highest concentration of voltage 4V
Special note: the sensor is powered , needs to warm up around 20S, measured data becomes stable , sensor fever is a normal phenomenon , because the internal electric wire, if not normal hot .
1, VCC: positive power supply (5V)
2, GND: power supply is negative
3, DO: TTL switching signal output
4, AO: analog output
If the order has not been shipped; please contact DinoDirect Live Support for order cancellation.You will get your refund within 24 hours.
If the order has already been shipped; you may return the item to us postmarked within 30 calendar days of delivery. Before that, please contact our Live Support to inform that.
In that case we will refund you the payment excluding actual shipping fees already incurred.
If the item is defective, please contact DinoDirect Live Support and send an email to us at email@example.com attached an image or video file clearly showing the defect of the product. And we will give you a response within 24 hours whether we will resend the item or refund the payment to you for compensation.
For customization, please consider carefully before ordering.Because we do not accept return and replacement.
|Unit Price||USD$ 5.02||USD$ 4.70||USD$ 4.42||USD$ 4.17||USD$ 3.94|
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• If the order has not been shipped; please contact DinoDirect Live Support for order cancellation.You will get your refund within 24 hours.
• If the order has already been shipped; you may return the item to us postmarked within 30 calendar days of delivery. Please contact our Live Support to inform that.
• Please contact Live Chat or click here to learn more return policy.