• Working voltage 5V
• Output format: Digital switching output (0 and 1), and analog voltage output AO
• Potentiometer adjust the sensitivity
• Uses a wide voltage LM393 comparator
• Comparator output signal clean waveform is good, driving ability, over 15mA
• Anti-oxidation, anti-conductivity, with long use time
• With bolt holes for easy installation
• Small board PCB size: 3.2cm x 1.4cm

MAX30100 Pulse Oximeter and Heart-Rate Sensor Module. Designed for optical pulse-sensing projects.

Motor Speed Encoder Sensor Module

• VCC Connect the positive 3.3 5 V power supply
• GND Connect power negative
• DO TTL switch signal output
• AO This module does not work

IR Infrared Obstacle Avoidance Tracking Sensor Module. Designed for infrared obstacle detection.

Infrared flame sensor module for electronics and sensing projects. Check the module specifications and wiring requirements before connecting it.

Infrared Transmitter LED 3mm 2-PIN. An LED component in the stated size and color.

Infrared Receiver LED 3mm 2-PIN. An infrared receiver for compatible remote-control signals.

HC-SR04 Ultrasonic Sensor Module. Designed for measuring distance using ultrasonic signals.

HC-SR04 Ultrasonic Sensor Holder. Designed for measuring distance using ultrasonic signals.

GY-521 module featuring the MPU6050 accelerometer and gyroscope for motion-sensing and orientation projects.

GY-50 L3G4200D 3-Axis Gyroscope Sensor Module. Designed for measuring angular motion.