RC Helicopter
Direct purchase from the factory 
![[US DIRECT] ATOMSTACK A5 M50 APP Control Dual-Laser Laser Engraving Cutting Machine Laser Engraver Cutter 5.5W Output Power Fixed-Focus 304 Mirror Stainless Steel Engraving DIY Laser Marking for Metal Wood Leather Vinyl](https://static.roymall.com/d/file/mall/titlepic/235/67803406-41f3-499a-afb7-154990584ff8.jpg?x-oss-process=image/resize,w_237/quality,Q_80/format,webp)
![[EU/US Direct]Raiser for LONGER RAY5 Engraver](https://static.roymall.com/d/file/mall/bigpic/235/65e9b76d-574a-4b4b-9c6c-02db18b89460.jpg?x-oss-process=image/resize,w_237/quality,Q_80/format,webp)
![[US/UK Direct] Refurbished ULTIMEA Nova S70 3.1.2 Soundbar 390W True Dolby Atmos Soundbar BassMax 4K Dolby Vision HDR Passthrough 3EQ Modes Wired Speaker Subwoofer](https://static.roymall.com/d/file/mall/titlepic/235/e1440062-c78c-4565-8aa7-f8857d749771.jpg?x-oss-process=image/resize,w_237/quality,Q_80/format,webp)
1.You can contact the customer service. for any question regarding the product.
2.Ask the question in English to get answer faster.
3.Keep your question short and to the point.
Questions:0/2000
MQ137 Gas Sensor Module MQ-137 Ammonia Sensor Module NH3 Sensor Module
1643
Shipping to: United States |
Express delivery: 7-12 business days |
Standard delivery: 15-25 business days
Ygtybarly howpsuz töleg
Mugt sowgat
Iberiş syýasaty
Yzyna gaýtarma syýasatyMugt Sowgat
Roymall-a hoş geldiňiz, premium sowgatlar satyn almak üçin hünärmen web sahypaňyz. Goldawyňyzy gymmatlandyrýarys we her sargydyňyzda mugt sowgat hödürleýäris.Iberiş Syýasaty
Sargytlaryňyz 2-5 iş gününde eltip beriler. $9.9-dan ýokary sargytlarda mugt iberiş.1. Yzyna Gaýtarma Syýasaty
Harytlar 40 gün içinde yzyna gaýtarylýar. Yörite harytlar yzyna gaýtarylýanok.2.Yzyna Töleg Syýasaty
Töleg original töleg usuly bilen yzyna gaýtarylýar.
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
