Hall Effect Sensor Module Hall Effect Sensor Module is used to detect the proximity of a magnet. It is very much smaller in size. When the magnetic field rises above a threshold level, the open-collector output transistor switches on, which pulls the logic-compatible output low and illuminates the onboard LED indicator. It's fast (The turn-on threshold is 35-450 Gauss, the minimum hysteresis is 20 Gauss, and the operating voltage range is 4.5 - 24 volts. This module uses the Allegro MicroSystems A3144EUA sensor. It has a 3-pin interface, signal, V+, and GND. To use this sensor /switch, place a 10K pull-up resistor between the "S" pin and the middle pin (+), and connect the "-" pin to the ground. Supply voltage to the middle pin. The "S" pin will go low (gets pulled to the ground) and the onboard LED indicator will turn on when a magnet is brought near. Pin Description: VCC : 2.3 volts to 5.3 Volts GND : power supply ground AOUT (analog sensor output) : Arduino/ MCU input DOUT (digital sensor output) : Arduino/MCU input Applications: Motor shaft speed measurement (shaft encoder) Object position detection Docking Detection Door Open and Close Detection Proximity Sensing Valve Positioning Pulse Counting

HC-12 Module Wireless RF UART Communication Module The HC-12 wireless RF UART communication module is a next-generation wireless data transmission module for embedded systems. It operates on a radio frequency range of 433.4-473.0MHz and can be configured to use any of its 100 communication channels, with each channel having a step size of 400kHz. The module has a maximum transmit power of 100mW (20dBm) and can receive signals as low as -116dBm with a baud rate of 5000bps, providing a communication distance of about 500 meters. This Rf module is designed using a stamped hole encapsulation method, which makes it easy to weld. Its compact size of 27.4mm13.2mm4mm (including antenna seat but excluding the spring antenna) makes it convenient for embedding into the application system. The module comes with a PCB antenna seat ANT1, and users can also use an external antenna in the 433MHz band by connecting a coaxial cable. The HC12 Module also features an antenna welding hole ANT2 for attaching a spring antenna, giving users the option to choose the antenna type based on their requirements. The module is equipped with an MCU, eliminating the need for additional programming. Users can simply send and receive UART data using one of the four UART modes of FU1, FU2, FU3, or FU4, which have an average operating current of 3.6mA, 80?A, 16mA, and 16mA, respectively. The module also supports AT commands for UART transmission mode selection. The HC12 module is based on the SI4463 EZRadioPro family chip by SiLabs and offers an impressive wireless data transmission and reception range of up to 1 km in open air environments. The module is low power and very user-friendly. Features IEEE 802.15.4g compliant Frequency range = 119–1050 MHz Receive sensitivity = –126 dBm Serial TTL (RX, TX, GND) interface Modulation (G)FSK, 4(G)FSK, (G)MSK, OOK Max output power +20 dBm Low active power consumption 10/13 mA RX, 18 mA TX at +10 dBm Ultra low current powerdown modes 30 nA shutdown, 50 nA standby Data rate = 100 bps to 1 Mbps Fast wake and hop times Highly configurable packet handler TX and RX 64 byte FIFOs Auto frequency control (AFC) Automatic gain control (AGC) Low BOM Low battery detector FCC Part 90 Mask D, FCC part 15.247, 15,231, 15,249, ARIB T-108, T-96, T-67, RCR STD-30, China regulatory ETSI Class-I Operation with SAW Applications Replacing Bluetooth in short-distance data transmission areas Enabling wireless communication between two microcontrollers from a certain distance Transferring telemetry data from UAVs Wireless serial port communication Embedding into various application devices due to its stamp holes edge design

HC-SR501 PIR Sensor (Passive Infrared Sensor) + IR Proximity Sensor The HC-SR501 PIR Motion Sensor Module allows you to sense motion. It is almost always used to detect the motion of a human body within the sensor’s range. It is often referred to as “PIR”, “Pyroelectric”, “Passive Infrared” and “IR Motion Sensor” sensors. The PIR Motion sensor module has an onboard pyroelectric sensor, conditioning circuitry, and a dome-shaped Fresnel lens. The PIR Sensor has a delay time adjustment Potentiometer and a sensitivity adjustment Potentiometer. Repeat Trigger Selection Jumper is also available. Compatible with Arduino , Raspberry Pi , NODE MCU , PIC, 8051, etc. The IR Proximity Sensor module has great adaptive capability of the ambient light, having a pair of infrared transmitters and a receiver tube, the infrared emitting tube emits a certain frequency, encounters an obstacle detection direction (reflecting surface), and infrared reflected back to the receiver tube receiving, after a comparator circuit processing, the green LED lights up, while the signal output will output digital signal (a low-level signal), through the potentiometer knob to adjust the detection distance, the effective distance range 2 ~ 10cm working voltage of 3.3V-5V. The detection range of the PIR sensor can be adjusted by the potentiometer, with little interference, easy to assemble, easy-to-use features that can be widely used for robot obstacle avoidance, obstacle avoidance car assembly line count, black-and-white line tracking, and many other occasions. Check out our entire range of IR Proximity Motion Sensors Also browse the wide range of Sensor Kits at affordable prices. read our blog explaining the infrared sensor working principle , Learn about the components, physics laws involved, and their applications in proximity sensing, item counting, burglar alarms, and more. PIR Sensor Pinout: IR Proximity Sensor Pinout: Applications: PIR sensors are used in thermal sensing applications, such as security and motion detection. The IR Sensor can be used in IP cameras. The PIR sensors are also used for Alarm systems and other crime-prevention devices. The IR sensor can be used for battery-driven human presence sensors for IoT smart homes. Read our blog about how does a proximity sensor work where we discuss what proximity sensors are, the features of proximity sensors, how does proximity sensor work, and the different types of proximity sensors. read our blog explaining the working principle of pir sensor , provides comprehensive information about Passive Infrared (PIR) sensors.

HC-SR505 Mini PIR Motion Sensor HC-SR505 Mini Infrared PIR Motion Sensor Detector Module is based on infrared technology, It automatically controls the products with high sensitivity, high reliability, ultra-small size, and ultra-low-voltage operation mode. The device works based on infrared technology and it can automatically control by itself with high sensitivity and high reliability. Because of the minimum size and low-power operation mode, it is widely used in battery-powered applications. The sensor module is basically used in applications where you want to detect the motion of a body which emits infrared radiations. HC-SR505 is preferred to be used in battery operated systems since the device is specifically designed to be operated by consuming very less power. Because of its small size the module can be installed in applications where the system size is taken in to consideration. Pinout: Pinout of HC-SR505 Mini PIR Motion Sensor It is widely used in various auto-sensing of electrical equipment, especially battery-powered automatic control products. Applications: Body induction lamps. Body sensors toys. Security Products. Industrial automation and control. Auto-sensing of electrical equipment. Battery-powered automatic control. 1 x HC-SR505 Mini Infrared PIR Motion Sensor Module.

HCSR501 PIR Motion Sensor The HC-SR501 PIR Motion Sensor Module used to detect the motion of a human body within the sensor’s range. It is often referred to as “PIR”, “Pyroelectric”, “Passive Infrared” and “IR Motion Sensor” sensors. The PIR Motion sensor module has an onboard pyroelectric sensor, conditioning circuitry, and a dome-shaped Fresnel lens. The HCSR501 PIR Motion Sensor requires 4.5 ~ 20 DC voltage. This PIR sensor's tiny size and sturdy design make it ideal for a variety of applications, including burglar alarms, automatic lighting control systems, and DIY motion-sensing technology projects. This PIR sensor features an adjustable time delay function that allows for customization of the sensor's response time. This sensor is compatible with Arduino, Raspberry Pi, AVR, PIC, 8051, etc. Check out our entire range of IR Proximity Motion Sensors Features: Onboard pyroelectric sensor, conditioning circuitry, and a dome-shaped Fresnel lens Low power consumption, making it energy-efficient for residential and commercial use Operates on 4.5 ~ 20V DC voltage with low current requirements Adjustable time delay function for customization of sensor's response time (3 seconds to approximately 5 minutes) Versatile for various applications such as security systems, automatic lighting control, and energy-saving devices Repeat Trigger Selection Jumper available Compatible with Arduino, Raspberry Pi, AVR, PIC, 8051, etc. Detects motion of a human body within its range Provides output "High" when a human body is detected and automatic Delay "LOW" when the body leaves its range Applications: Security Systems Home Automation Trail Cameras Animated Props Energy Efficiency Automatic Light Control Garage Door Openers Motion-Sensitive Lighting Automatic Doors Also, check the HC-SR505 Mini Infrared PIR Motion Sensor . Pin Diagram: PIR Sensor interfacing with Arduino PIR Sensor interfacing with Raspberry pi

HCSR501 PIR Motion Sensor The HC-SR501 PIR Motion Sensor Module allows you to sense motion. It is almost always used to detect the motion of a human body within the sensor’s range. It is often referred to using “PIR”, “Pyroelectric”, “Passive Infrared” and “IR Motion Sensor” sensors. The PIR Motion sensor module has an onboard pyroelectric sensor, conditioning circuitry, and a dome-shaped Fresnel lens. The PIR Sensor has a delay time adjustment Potentiometer and sensitivity adjustment Potentiometer. Repeat Trigger Selection Jumper is also available. Compatible with Arduino, Raspberry Pi, AVR, PIC, 8051, etc. Check out our entire range of IR Proximity Motion Sensors Applications: Automatically sensing light for Floor, bathroom, basement, etc Automatically sensing light for porch, warehouse, Garage, etc

High Sensitivity Vibration Sensor Module This is a high-sensitivity vibration sensor mainly used for security detection. This module features high sensitivity, fast response, and excellent performance, and it is widely used for security applications such as an anti-theft system for vehicles. The sensor will output a low logic voltage when vibration is detected. The sensitivity can be adjusted with the onboard potentiometer. Vibration detection can be controlled in a wider range, has been widely applied to automobile, and motorcycle anti-theft systems, the vehicle alarm is 80% with this kind of sensor . The sensor can also be used with MCU, wireless transmitting module, a wired alarm, etc. Features: Working voltage: DC 5-15V With signal indicate light Output signal: LOW level when detecting vibration

Hobbywing 5L Brushless Water Pump 10A 14S V1 for Agriculture The Hobbywing 5L Brushless Water Pump is a high-performance, compact solution designed specifically for precision agricultural applications. Powered by a brushless motor, this pump operates efficiently on a wide voltage range of 12-14S (DC 44–60.9V), making it ideal for drone-based and automated irrigation systems. With a maximum power output of 60W and a flow rate of 5L/min, it ensures consistent and reliable water delivery. The pump maintains a working pressure of 0.35 MPa, supporting precise spraying tasks. Built to endure harsh environments, it offers an IP67 protection rating, providing complete dust resistance and protection against temporary water immersion. Features: Long Lifespan: 3–5x longer than standard pumps; 500+ hours of operation. Low Maintenance: Durable brushless motor reduces repair needs. Efficient Spraying: Accurate application of water, fertilizers, and pesticides. Eco-Friendly: Minimizes chemical runoff and saves resources. Drone Compatible: Works with various agricultural drone setups.

Hobbywing V1 120W 8L Brushless Water Pump for Agriculture UAV Drone The Hobbywing V1 120W 8L Brushless Water Pump for Agricultural Drone Pump is perfect for spraying on farming drones. It has protections against high current and temperature, making it stable and long-lasting. This pump lasts over 500 hours, much longer than regular pumps, reducing maintenance costs. It can support up to 12 nozzles and provides fast water flow, making it great for large agricultural drones. The Brushless Water Pump is IP67 Waterproof Pump and has a pluggable cable, making it easy to install and replace in the field. Features Over-current and over-temperature protection for safe operation. 500+ hours of service life, 3-5 times longer than regular pumps, reducing maintenance costs. Supports up to 12 nozzles, providing high spraying speed for efficient coverage. Ideal for 20-30L agricultural drones, improving spraying efficiency. Fully protected against water, ensuring reliable performance in all conditions. Easy to install and replace, with the faulty pump head replaceable in the field.

HTC DM-86 Digital Multimeter This is a 2000 Counts HTC DM-86 Digital Multimeter. It features various functions like Accurate measurement DCV, ACV, DCA, ACA, Resistance, Capacitance, Frequency, Temperature, Diode, Continuity, etc. It has Large LCD backlight display screen, can be easily used in dark places and clearly read the data on the display screen. The multimeter has a built-in safety tube protection device and an overload protection circuit to prevent burns. security is outstanding. The design of the shock-proof protective cover for the multi-use strap is scratch-resistand and impact-resistand. The dual protection is safer and safer to use, making the measurement worry-free. check out : HTC DM-97 Digital Multimeter