The Liquid PH 0-14 Value Detect Sensor Module is a compact and reliable electronic device that measures the pH level of liquid solutions in the range of 0-14. Compatible with Arduino microcontrollers, this module features a built-in amplifier, LED indicator, and onboard potentiometer for calibration, making it a cost-effective and easy-to-use solution for pH level monitoring in a variety of applications.

The CH-738C Plastic Front Panel input Advanced CPU Coin acceptor is a durable and reliable device designed for use in vending machines. It features an advanced CPU for precise coin recognition and processing, a built-in anti-stringing mechanism, and compatibility with a wide range of vending machines. Its compact design and easy installation make it a great choice for businesses looking to improve their vending operations.

Mini magnetic reed modules are electronic sensors designed for use with Arduino microcontrollers. These modules consist of a small, cylindrical reed switch that is sensitive to magnetic fields, and an on-board LED that provides a visual indication of the switch state. The modules can be powered by a voltage range of 3-5.5V, making them compatible with a wide range of Arduino boards. When a magnetic field is detected by the reed switch, the switch state changes, and the LED on the module lights up. This makes the module useful for detecting the presence of magnets, such as in proximity sensors, magnetic door alarms, and other similar applications.

The LM393 Motor Speed Measuring Sensor Module is a compact electronic device that can measure the speed of a motor using an infrared LED emitter and phototransistor receiver. It is highly sensitive and accurate, and can be easily calibrated using the built-in potentiometer. The module outputs a digital square wave signal that can be read by an Arduino board or other microcontrollers with digital input pins. It is ideal for use in robotics, automation, and hobby projects where precise motor speed measurement is required.

The LM393 Vibration Sensor Module is an electronic device that can detect and measure vibration and movement. It is based on the LM393 voltage comparator IC and features a small metallic spring attached to a PCB that acts as a sensitive vibration detector. The module is easy to use, operates on a wide range of voltages, and produces a digital signal output that can be read by a microcontroller. It is commonly used in applications such as earthquake detection, burglar alarms, and industrial control.

The CJMCU-30205 MAX30205 is a highly accurate and reliable digital temperature sensor specifically designed for measuring human body temperature. It has an accuracy of ±0.1°C and a resolution of 0.00390625°C, making it ideal for medical applications. The sensor communicates over I2C and is powered by 2.7V to 3.3V, with a low operating current of 120 μA and standby current of 0.5 μA. Its compact size and easy integration with microcontrollers make it an excellent choice for portable and battery-powered devices.

The TCRT1000 reflective optical sensor is a compact and versatile sensor that is commonly used for proximity sensing and object detection applications. It emits a beam of infrared light and detects the reflection of the light when it hits an object in its field of view. The sensor is easy to use and can be integrated into a variety of projects with a detection range of up to 25mm.

The AC 220V 3A 22mm Plastic Vertical Horizontal Magnetic Water Flow Switch W/Sensor is a compact and durable device designed to monitor the flow of water in a system. It is made of plastic material, measures 22mm in size, and can be installed vertically or horizontally. The flow switch is powered by an AC voltage of 220V and has a current rating of 3A. Its magnetic sensor accurately detects the movement of water, ensuring efficient and reliable operation of water-based systems.

The Mini Logging Recorder Data Logger Module Shield V1.0 is a compact data logging module that can be easily integrated with 3.3V Arduino boards. It comes equipped with a microSD card slot and can log data in various formats, including CSV, text, and binary. The onboard RTC ensures accurate time-stamping of recorded data. It is small in size and suitable for applications where space is limited.

The Temperature and Humidity Sensor Module LGHTM-01A is a compact and reliable electronic device designed to measure temperature and humidity levels in the surrounding environment. It uses a thermistor for temperature measurement and a capacitive humidity sensor for humidity measurement. The module provides separate analog voltage output signals for temperature and humidity, which can be easily interfaced with a microcontroller or other digital device for processing and display of temperature and humidity data.

The RFID Reader/Writer NFC module MFRC522 is a compact electronic component designed for communication with RFID tags and NFC devices operating at a frequency of 13.56MHz. It is compatible with Arduino microcontrollers and operates with a power supply voltage ranging from 5V to 3.3V. The module features a built-in antenna for efficient communication and supports various cryptographic protocols for secure data exchange. Its small form factor and versatile features make it suitable for use in various applications, including access control, payment systems, and asset tracking.

The Professional Water Quality pH Analysis Device IP65 Waterproof is a reliable and accurate tool designed for measuring the pH level of water samples in various environments. It has an IP65 waterproof rating, automatic temperature compensation, stability indicator, large LCD screen, and is battery-powered. Its compact design and easy-to-use interface make it a versatile tool for professionals in laboratory environments, industrial settings, and field applications.