MQ137 Ammonia Sensor for Arduino

Marsoni

M251S

$990.00

Get it in 3 business days with 1 day shipping. Friday, May 29

MQ137 Ammonia Sensor for ArduinoOne size : 32mm X22mm X30mm L * W * H Second, the main chip : LM393, NH3 gas sensing probe Third, the working voltage : DC 5V Four, characteristics: 1, with the signal output LED indicates ; 2 , dual signal output ( analog output , and TTL level output ) ; 3, TTL output valid signal is low ; ( lights lit when the output is low, which can be accessed microcontroller IO port ) 4 , analog output increases with the concentration , the higher the

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