Features :
- Signal output light indicator.
- Analog and level signal output.
- TTL output valid signal is low. (When the output low signal light can be directly connected microcontroller or relay module).
- The carbon monoxide detection with better sensitivity.
- It has a long service life and reliable stability.
- Rapid response recovery features.
Package Includes :
1 x MQ-3 Alcohol Detector Gas Sensor Module.
Holder for Ultrasonic HC-SR04 Sensor Module
Amped Heart Beat Pulse Sensor
Digital Servo Motor & ESC Tester
3 Wire Voltmeter 0.36 Inch 4.5V-30V DC Digital Voltmeter Module Board
L298N Based Dual DC Motor Driver Module with PWM Control 






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