ماژول سنسور تشخیص کیفیت هوا MQ-135

ماژول سنسور تشخیص کیفیت هوا MQ-135

1. It adopts high-quality double-panel design with power indication and TTL signal output indication; 
2. It has DO switch signal (TTL) output and AO analog signal output; 
3. TTL output valid signal is low level. (When the output is low, the
signal light is on, it can be directly connected to the MCU or relay
module.) 
4. The voltage of the analog output is higher. The higher the concentration, the higher the voltage. 
5. Good sensitivity to air quality and harmful gas detection. 
6, there are four screw holes for easy positioning; 
7, product dimensions: 32 (L) * 20 (W) * 22 (H) 
8, with long-term service life and reliable stability 
9, fast response recovery characteristics
10, Input voltage: DC5V Power consumption (current): 150mA 

Pinout: 
DO output: TTL digital quantity 0 and 1 (0.1 and 5V)
AO output: 0.1-0.3V (relatively non-polluting), the highest concentration voltage is about 4V 

Application:
Harmful gas detection device for
household and environment, suitable for detection of harmful gases such
as ammonia, aromatics, sulfides, benzene vapors, smoke, etc. Gas
concentration components test concentration range: 10 to 1000ppm