Keyes Self-Locking Button Module Self-Locking Switch Sensor Electronic Building Blocks Compatible with Arduino

$9.00

WitMotion Electronic Compass RM3100 Industrial-Grade Precision Module Magnetic Field Sensor Magnetometer

$11.00

Vital Signs Detection Module Heart Rate Monitor ECG Pulse PPG Blood Oxygen SpO2 Sensor Bluetooth Development Kit

$299.00

Smart Car Speed Measurement Module, Encoder Counter, Motor Infrared Slotted Optocoupler Through-Beam Photoelectric Sensor

$3.51

Pulse Heart Rate Sensor Module with Unwelded Pin Headers

$5.90

Hall Current Module ACS758LCB-050B-PFF-T Linear Current Sensor

$13.90

GY-31 TCS230 TCS3200 TCS34725 Color Sensor Color Recognition and Induction Module

$21.78

Raindrop Sensor Module Large Area Rain Detector 5V Relay Control Dry Contact Switch Water Level Detection

$1.00

Raindrop Sensor Module Large Area Double-Sided Raindrop Controller Relay Module Rainwater Sensor

$3.14

AHT20+BMP280 Temperature, Humidity, and Barometric Pressure Module - High-Precision Digital Sensor

$4.50

TDS Water Quality Sensor Module with STM32, EC Conductivity Probe for Water Testing

$2.80

MAX9814 Microphone Amplifier Module MIC Voice Amplification 2.7V-5.5V Capsule Sensor

$6.00