12mm Reed Switch/Sensor The 12mm reed switch/sensor is an electrical switch operated by an applied magnetic field. The reed switch contains a pair (or more) of magnetizable, flexible, metal reeds whose end portions are separated by a small gap when the switch is open. The reeds are hermetically sealed in opposite ends of a tubular glass envelope. When the device is exposed to a magnetic field, the two ferrous pins inside the switch pull together and the switch closes. When the magnetic field is removed, The Reed Switch separates and the switch opens. This makes for a great non-contact switch. This switch can carry up to 1.2A. Applications: Home and office automation. Door or windows sensor as a burglar alarm. Package Includes: 1 x 12mm Reed Switch Specifications: Maximum Voltage(V) 24V DC Maximum Operating Current (A) 1.2 Frequency(Hz) 100 Mech. & Electrical Lifecycle ≈ 100,000 Contact Resistance 20mΩ Insulation Resistance (MΩ) 100 Operating Temperature Range (°C) -50 to 140 °C Dimensions 12x2x1mm Weight 1

4 Power Indicator Battery Detection Module A Power Indicator Battery Detection Module is a gadget that detects the charge level in a battery and displays the remaining power level to the user.It often contains a voltage divider circuit that can convert the battery voltage to a level that a microcontroller or other device can read, as well as an indicator circuit that may display the remaining power level using LEDs or other visual means.The Power Indication Battery Detection Sensor Module you indicated most likely has four LEDs or other indicator lights to indicate different degrees of remaining power, such as a green LED for full power, a yellow LED for medium power, and a red LED for low power. Onboard high precision voltage detection chip and power supply voltage chip.Four onboard battery indicator light-emitting diodes (leds). Three kinds of color display, red, yellow, green, representing 20%, 50%, 80%, 100% of the battery. Set aside all the batteries testing interface and the two positioning hole. By Removing the LEDs and extending their connections to arduino, this module can also be used with all arduino boards. PCB Size: 22.2(mm)x17.2.(mm) Package Includes: 1 x 4 Power Indicator Battery Detection Module Specifications: Voltage 12V Light Type  LED Dimension(mm) 22.2 x 17.2

4Pin KY-026 Flame Sensor Module This 4Pin Flame Sensor Module is used to detect fire/flame sources or other light sources of the wavelength in the range of 760nm 1100 nm. It is based on the YG1006 sensor which is a high speed and high sensitive NPN silicon phototransistor. Due to its black epoxy, the sensor is sensitive to infrared radiation. The sensor can be a great addition to a firefighting robot, it can be used as a robot's eye to find the fire source. When the sensor detects flame the Signal LED will light up and the D0 pin goes LOW. The module has 2 outputs: Analogue, which gives a real-time voltage output signal on thermal resistance, and digital which allows temperature thresholds to be set via a potentiometer. Package Includes: 1 x 4Pin KY-026 Flame Sensor Module Specifications: Operating Voltage (VDC) 3.3 ~ 5 Spectrum range 760nm ~ 1100nm Detection Angle() 0 to 60 Operating Temperature (C)     -25 to 85 Dimensions(LxWxH) 35 x 15 x 14mm Weight 10gm

ADXL345 Digital Angle Acceleration Sensor Module The ADXL345 Digital Angle Acceleration Sensor Module is the go-to solution for high-precision movement measurement. Whether you're working on a DIY project or need accurate angle detection, this sensor module delivers. With versatile compatibility supporting both 5V and 3.3V inputs, it seamlessly interfaces with microcontrollers like Arduino. This sensor features wide sensitivity ranges, from +/- 2G to +/- 16G, offering flexibility for various applications. Its noise-resistant design, incorporating the onboard RT9161, ensures faster load speed, making it perfect for noisy power environments. DIY enthusiasts will appreciate its user-friendly design, and its mobile application suitability makes it a valuable tool for multiple scenarios. Made with quality in mind, the ADXL345 promises high-resolution measurements (4mg/LSB) for changes less than 1.0° angle. From skew detection to dynamic acceleration measurement, this sensor module is a versatile choice.

Analog Capacitive Soil Moisture Sensor Analog Capacitive Soil Moisture Sensor (Anti-Corrosion) is a soil moisture sensor based on capacitance variation. Compared with the resistive sensor, the capacitive sensor does not require direct contact with the metal electrode, which can greatly reduce the electrode corrosion, it is considered to be anti-corrosion.It is important to note that this sensor can only qualitatively test soil moisture and cannot measure it quantitatively. As soil moisture increases, yield values ​​decrease; conversely, when the humidity decreases, the output value becomes higher. This Capacitive Soil Moisture Sensor V1.2 measures soil moisture levels by capacitive sensing rather than resistive sensing like other sensors on the market. It is made of corrosion-resistant material which gives it excellent service life. Insert it into the soil around your plants and impress your friends with real-time soil moisture data. It is perfect for low-voltage MCUs, both 3.3V, and 5V. For compatibility with a Raspberry Pi, it will need an ADC converter. This soil moisture sensor is compatible with our 3-pin “Gravity” interface, which can be directly connected to the Gravity I/O expansion shield. Also, read our blog on Smart Plant Monitoring System detailing the plant moisture monitoring system, discussing their purpose, components, working, advantages over traditional systems, and other important aspects of this emerging technology. Applications: Garden plants Moisture detection Intelligent agriculture Package Includes: 1 x Analog Capacitive Soil Moisture Sensor Specifications Operating voltage range 3.3 ~ 5.5V Sensor Type  Capacitive Soil Moisture Sensor Interface PH2.54-3P Operating Current 5mA Dimensions  5 x 4 x 3cms  Weight 15 grams

Analog Sound Sensor Microphone Module for Arduino This is a high-quality Analog Sound Sensor highly sensitive Microphone Module for Arduino used in detecting the loudness in the ambient, the Arduino can collect its output signal and actuate accordingly. You may use it to make some funny interactive works such as a "clap and buzz" to find your lost keys or remote control if you add a buzzer.

CJMCU-103 Rotary Angle Sensor Potentiometer Module The CJMCU-103 is a rotary angle sensor module that measures the angular position of a shaft or other rotating object using a potentiometer. A potentiometer is a sort of variable resistor that can be used to measure a shaft's location by altering the resistance as the shaft rotates. A potentiometer is commonly attached to the shaft, and an integrated circuit (IC) turns the potentiometer's resistance into a voltage or digital signal that can be read by a microcontroller or other device. The CJMCU-103 is a low-power, compact device with a wide range of system integration options. It can be used to calculate the angle of a steering wheel, regulate the movement of a robot arm, or detect the angular location of a motor shaft. MCU-103 Rotation Angle Sensor has a dustproof design that protects the interior from dust, which maintains stable performance. It is compatible with high peak lead-free soldering. temperatures. Applications: Used in Switch for automotive, Motor drive unit, Radio control equipment, Electric motor-driven bicycle, etc Package Includes: 1 x Rotary Angle Sensor Specifications Resistance (Ohms) 10k Resistance Tolerance ±30% Mounting Type Surface Mount Mechanical 0° ~ 333.3° Dimensions  3 x 2 x 1cms  Weight  5 grams

DS3231 Real Time Clock Memory Module with Battery DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. Real-time clock generator seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation DS3231 available in commercial and industrial temperature ranges, using a 16-pin 300mil SO package. DS3231 RTC  is a Precise Real-Time Clock Module with 32Kbit EEPROM and a built-in 10-bit temperature sensor having a resolution of 0.25C. The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The ds3231 Arduino is available in commercial and industrial temperature ranges and is offered in a 16-pin, 300-mil SO package. Applications: Robotics Data Loggers Servers Computer Peripherals GPS Modules Utility power meters Package Includes: 25 x DS3231 Real Time Clock Memory Module Specifications: Operating Voltage (VDC) 2.7 ~ 5.5 Voltage Supply for RTC 2.2 V ~ 5.5 V Battery Holder 2032 Coin Battery I2C interface Fast (400kHz) I2C Interface. Time and Date Format Time: HH: MM: SS (12/24 hr).Date Format: YY-MM-DD-dd. Dimensions in mm (LxWxH) 38 x 22 x 14 Weight(gm) 8

DS3231 Real Time Clock Memory Module with out Battery DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. Real-time clock generator seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation DS3231 available in commercial and industrial temperature ranges, using a 16-pin 300mil SO package. DS3231 RTC  is a Precise Real-Time Clock Module with 32Kbit EEPROM and a built-in 10-bit temperature sensor having a resolution of 0.25C. The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The ds3231 Arduino is available in commercial and industrial temperature ranges and is offered in a 16-pin, 300-mil SO package.

Gravity: Analog AC Current Sensor (20A) Gravity: Analog AC Current Sensor (20A) is the perfect solution for hassle-free AC current measurement. No more cutting wires or complicated circuits. Designed for non-contact measurement, this sensor offers multiple ranges, making it versatile for various scenarios. Whether monitoring AC motors, lighting, or electrical equipment, this sensor ensures high safety and easy installation. Compatible with 3V3/5V micro-controllers, it provides accurate readings without direct contact. The wide temperature range makes it suitable for diverse conditions. Enhance your projects with the reliability of Gravity: Analog AC Current Sensor.