MQ-135 Air Quality & Pollution Sensor

Availability: In Stock
Weight: 0.01kg
Package Size: 6.00cm x 3.50cm x 1.50cm
SKU: ELE-SEN-019

$2.00

Ex Tax: $2.00

Qty

Description

Features:

The MQ-135 is a semiconductor-based air quality sensor designed to detect a wide range of harmful gases, including ammonia, hydrogen sulfide, benzene vapors, smoke, and other pollutants. It operates through conductivity changes in SnO2 material when exposed to gases. With high sensitivity, low power requirements, and cost efficiency, it's ideal for indoor and industrial air monitoring.

Specifications:

Model: MQ-135
Sensor type: Semiconductor
Target gases: Ammonia, sulfide, benzene vapors, smoke, hydrogen
Detection range: 10 to 1000 ppm (varies by gas)
Loop voltage (Vc): <=24V DC
Heater voltage (Vh): 5.0V +-0.1V (AC or DC)
Load resistance (RL): Adjustable
Heater resistance (Rh): 29 ohm +-3 ohm at room temp
Heater power consumption: <=950 mW
Sensitivity: Rs (in air) / Rs (400 ppm H2) >=5
Output voltage (Vs): 2.0V to 4.0V in 400 ppm H2
Concentration slope (alpha): <=0.6 (R400ppm / R100ppm H2)
Standard operating temp: 20C +-2C
Standard humidity: 55% +-5% RH
Preheat time: Over 48 hours

Shipping & Returns

Delivery Within Lebanon

Shipping costs depend on the total weight of your order:

Up to and including 7 kg: USD 5.
Over 7 kg: USD 10, within our supported shipping limits.

In-stock orders are prepared promptly during our opening hours: Monday–Friday, 9:00–18:00. Orders received outside these hours are prepared on the next business day. Courier delivery usually takes 1–2 business days after dispatch.

International Shipping

We ship through Aramex and DHL, subject to destination and shipment availability. Shipping charges are calculated automatically at checkout. Delivery times vary by destination, carrier, and customs clearance.

Any applicable import duties and taxes are the customer’s responsibility unless otherwise stated.

Returns

All sales are final once confirmed and processed. Please review our Refund & Return Policy before ordering. Warranty support, where applicable, is handled separately.

For full details, see our Shipping Policy and Refund & Return Policy.

Payment Policy

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