Tbaħħir standard b'xejn fuq ordnijiet ta' aktar minn $9.9
Politika tar-ritorn
Oġġetti jistgħu jintirbu sa 40 jum mill-data tar-riċeviment. Oġġetti personalizzati ma jistgħux jintirbu. Oġġetti mixtrija b'gift card jistgħu biss jinbidlu; ma jistgħux jintirbu.
Rigal B'Xejn
Merħba għal Roymall, is-sit professjonali tiegħek għal xiri ta' rigali ta' kwalità għolja. Napprezzaw is-sapport tiegħek u rridu nuruk gratitudni billi noffru rigal b'xejn ma' kull ordni.
Politika tat-Tbaħħir
Oġġetti jintbagħtu fi żmien 2-5 ġranet tax-xogħol. Ordni ta' aktar minn $9.9 jintbagħtu b'xejn.
1. Politika tar-Ritorn
Oġġetti jistgħu jintirbu sa 40 jum. Oġġetti personalizzati ma jistgħux jintirbu.
2.Politika tar-Rifużjoni
Ir-rimi jintirbu bl-istess metodu ta' ħlas oriġinali.
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Description:
Size: 32mm X22mm X30mm length * width * height
Main chip: LM393, NH3 gas sensing probe
Working voltage: DC 5V
Features:
1. It has a signal output indicator indication;
2, dual signal output (analog output and TTL level output);
3. The TTL output valid signal is low level; (when the output low level, the signal light is on, it can be connected to the IO port of the single chip)
4. The analog output increases with increasing concentration, and the higher the concentration, the higher the voltage;
5. High sensitivity and selectivity to ammonia;
6. Has a long service life and reliable stability;
7. Fast res ponse recovery features;
8. With mounting holes for easy installation;
9. The probe can be plugged and unplugged for easy testing.
Application:
Harmful gas detection device for home and environment, suitable for the detection of ammonia vapor, ammonia gas sensor test concentration range: 10 to 300ppm
Provide reference routines, circuit diagrams, and probe instructions
Package Included:
1 x MQ-137 Ammonia Sensor Module NH3 Sensor Module
Roymall C.o.
Rigal b'xejn
Politika tat-tbaħħir
Politika tar-ritorn
Coupon Code
Direct purchase from the factory 
Electronic Components & Supplies
Module Board
Sensor & Detector Module
