D&V Engineering

1. RGB LED module LED is made of a plug-in full-color, by R, G, B three-pin PWM input voltage can be adjusted in three primary colors (red / blue / green) strength in order to achieve full color mixing effect. Control module with cool lighting effects can be achieved.
2. Use plug-in full-color LED RGB tricolor limiting resistor to prevent burn Three primary colors can be mixed to get different colors by adjusting the PWM Can interface with a variety of microcontrollers Operating voltage: 5V LED drive mode: common cathode drive

1. Supply voltage: 5-30v; Rated input current: 2mA; Rated output current: 2mA
2. Output Signal: Analog 0-5V; Change ratio: 1000:1000; Linear range: 0~1000V 0~10mA; Linearity: 0.2%
3. Isolation withstand voltage: 4000V; Onboard micro-precision voltage transformer; Analog output corresponding quantity can be adjusted; Good consistency for voltage and power measurement
4. Active output single-phase AC voltage sensor module; Operating temperature : 40ºC ~ + 70ºC
5. Dimension:- Length: 50mm; Width: 17mm; Height: 20mm; Weight: 21 gm

1. INA219 Precision Power Monitor Chip (Texas Instruments)
2.  Measures bus voltage, current, and power simultaneously
3. I2C Interface with configurable address (up to 4 addresses)
4. High-side current sensing for safety and flexibility
5. Built-in 16-bit ADC for accurate measurements
6. Supports both 3.3V and 5V logic levels
7. Low quiescent current for energy-efficient applications
8.  Compact CJMCU form factor for easy integration

2. Light Sensitivity: The resistance of the 5MM photoresistor decreases as light intensity increases, and it increases in the absence of light, allowing for accurate light level detection.
3. Compact 5MM Design: The small 5MM size allows it to fit in tight spaces and be integrated into small electronic projects without taking up excessive space.
4. High Sensitivity to Light: It is highly responsive to changes in light conditions, making it perfect for applications requiring light-based sensing and control.
5. Easy to Use: Simple to integrate into a wide range of circuits, it can be used in both beginner and professional electronic projects.
6. Versatile Applications: Commonly used in light-sensitive devices such as automatic lights, brightness control systems, and outdoor lighting.
7. Stable Performance: Offers consistent and stable operation over time, providing reliable performance even under varying environmental conditions.
8. Cost-Effective: An affordable solution for projects requiring light sensing without the need for complex components or systems.

1. Working voltage: DC 5V.
2. With signal output indication, with mounting holes for easy installation.
3. The output valid signal is low level, and the circuit board outputs the switch quantity, which can be directly connected to the IO port of the single chip microcomputer.
4. Sensitivity is adjustable (fine adjustment), magnetic field induction detection sensitivity is extremely high.
5. Can be used for motor speed measurement, position detection and other occasions.

1. Working voltage:4.5V-24V , Power consumption, 3 mA in rest, 8 mA when switched on
2. Small size and high sensitivity.
3. Analog magnetic sensor module and a digital interface
4. Built-in 13 LED build a simple circuit to produce a magnetic flash
5. Black PCB board, made of the flame retardant epoxy resin material

1. High Sensitivity: Designed to detect small changes in magnetic fields, ensuring precise measurements and reliable performance.

2. Compact To-9 Package: The small form factor allows for easy integration into various projects and systems without requiring significant space.

3. Wide Operating Voltage: Supports a range of supply voltages, making it suitable for various applications and systems.

4. Low Power Consumption: Efficient design minimizes energy usage, making it ideal for battery-operated devices.

5. Digital Output: Provides a clear and easy-to-read output signal, simplifying integration with microcontrollers and other digital systems.

• Using SW-420 normally closed type vibration sensor.
• Comparator output, clean signal, good waveform, strong driving ability, >15mA.
• Operating voltage 3.3V ~ 5V
• Using a wide voltage LM393 comparator
• Package Includes:- 2x Vibration sensor module alarm Motion sensor module vibration switch SW-420.

1. Supply voltage: 3.3 V to 5V
2. Output can directly connected to controller
3. TTL level output
4. Maximum output current : 15mA
5. Can work on low voltages
6. Maximum operating temperature: 0°C to + 80°C
7. Easy interface
8. Long life.

1. Reed switch is a kind of passive electronic switching component with contacts with a simple structure, small size and easy to control.consists of a sealed glass envelope where there are two ferrous elastic reeds and is filled with inert gas called rhodium.
2. Wide voltage LM393 comparator embedded
3. Digital Output ( 0 and 1 )
4. Bolt holes for easy installation
5. Normally-Open
6. Working distance: 1.5 CM
7. Operating voltage: 3.3V - 5V DC
8. Current: 15mA
9. Output Type: Digital switching output (0 and 1)
10. Size: 3.2 x 1.9 x 0.7 cm

1. Low-noise analog signal path.
2. Device bandwidth is set via the new FILTER pin.
3. 5 µs output rise time in response to step input current.
4. Small footprint, low-profile SOIC8 package.
5. 2.1 kV RMS minimum isolation voltage from pins 1-4 to pins 5-8.

1. The low-noise analog signal path
2. Device bandwidth is set via the new FILTER pin
3. 5 µs output rise time in response to step input current
4. Small footprint, low-profile SOIC8 package
5. 2.1 kV RMS minimum isolation voltage from pins 1-4 to pins 5-8
6. 5.0 V, single-supply operation
7. 66 to 185 mV/A output sensitivity
8. Output voltage proportional to AC or DC currents
9. Factory-trimmed for accuracy
10. Extremely stable output offset voltage
11. Nearly zero magnetic hysteresis
12. The ratiometric output from the supply voltage.

1. Max current measurement: 30a; analog output: 66mv or a
2. Pcb board size: 31 x 13mm or 12 inch x 05 inch (L x w); material: electronic components, plastic
3. Net weight: 5g

1. Equipped with a transient voltage suppressor to protect against accidental disconnections or voltage spikes, ensuring safe operation even if the load is suddenly disconnected.
2. ±3% non-linearity (10% to 120% of rated input current) ensures the sensor provides reliable measurements over a broad range of current loads.
3. The sensor features an opening of 13 x 13 mm, making it compatible with various wire sizes for current measurement.
4. Capable of generating a sufficient voltage output to drive a 5V input reliably, making it suitable for use in low-voltage monitoring systems or microcontroller-based projects.
5. 100A max, designed to measure high current flow safely and efficiently.

1. Small in size, light weight, convenient to use.
2. Analog input voltages up to 5V, the voltage detection module input voltage not greater than 5Vx5=25V.
3. This module is based on principle of resistive voltage divider design, can make the red terminal connector input voltage to 5 times smaller.
4. Output Interface : + connected 5/3.3V, - connected GND, s connected Aduino AD pins. DC input interface : red terminal positive with VCC, negative with GND.
5. There are total four pieces of modules in one set that you may use for many projects.

1. Operating Voltage: 5v DC.
2. This module is Small and Simple to use.
3. Digital switch output (0 & 1)
4. High sensitivity
5. Completes the circuit when the module is tilted
6. LED lights up when tilt switch is activated

1. Operating Voltage: 3V-5V
2. High-resolution conversion of light intensity to frequency.
3. Chip pins all has drawn for standard 100.
4. Mil-convenient for bitmap board.
5. Programmable color and full-scale output frequency

1. A simple flex sensor 2.2" in length. As the sensor is flexed, the resistance across the sensor increases.
2. The resistance of the flex sensor changes when the metal pads are on the outside of the bend (text on inside of bend).
3. Connector is 0.1" spaced and bread board friendly. Check datasheet for full specifications.
4. Please refrain from flexing or straining this sensor at the base.
5. flex sensor 2.2 flex sensor robot hand electronic gloves

1. I2C Communication
2. : Easy integration with microcontrollers via I2C interface.
3. Wide Measurement Range: Detects light levels from 1 to 65535 lux.
4. Low Power Consumption: Efficient operation, ideal for battery-powered applications.
5. Compact Size: Small footprint for versatile installation options.
6. Built-in Pull-Up Resistors: Simplifies wiring for I2C connections.
7. High Sensitivity: Suitable for both low and high light conditions.
8. Operating Voltage: Compatible with 3V to 5V DC power supply.
9. Default I2C Address: 0x23, easily configurable.
10. Operating Temperature: Functional in a range of -40°C to 85°C.
11. Lightweight
12. : Approximately 5g, making it easy to incorporate into projects.

1. The wireless module is integrated with ESPRESSIF-ESP32 240MHz Xtensa dual-core 32-bit LX6 microprocessor.
2. It needs a power supply of 5V/1A and has a Type C port.
3. It features 802.11 b/g/n wifi protocol and bluetooth v4.2BR/EDR and BLE standard protocol.
4. The wireless communication module supports cloud server development and SDK for user firmware development.

1. The MT8870 module is a low power device DTMF decoder chip. It is a complete DTMF receiver integrating both the band-split filter and digital decoding functions.
2. This module is suitable for modem interfaces, mobile radios and other DTMF related applications.
3. On-board MT8870 frequency decoder chip
4. On-board audio input interface
5. On-board LED lights for output state indication

1. Low operating voltage for embedded application;
2. Standard SCCB interface compatible with I2C interface;
3. Raw RGB, RGB (GRB4:2:2, RGB565/555/444),YUV(4:2:2) and; YCbCr (4:2:2)output format; Support VGA, CIF and from CIF to 40 x 30 format;
4. Image Quality Control: Color saturation, hue, gamma, sharpness and anti-blooming;
5. ISP includes noise reduction and defect correction; Lens shading correction; Color saturation level auto adjust; Edge enhancement level auto adjust; De-noise level auto adjust

1. Operating voltage : 3.3V-5V
2. Power indicator : Red
3. Digital switch output indicator : Green
4. Bolt hole for easy installation

1. Wi-Fi Module - ESP-12E module similar to ESP-12 module but with 6 extra GPIOs.
2. Headers - 2x 2.54mm 15-pin header with access to GPIOs, SPI, UART, ADC, and power pins
3. Power your development in the fastest way combinating with NodeMCU Firmware!
4. Wireless 802.11 b / g / n standard
5. Micro USB port for power, programming and debugging

The WeMos D1 is an ESP8266 WiFi based board that uses the Arduino layout with an operating voltage of 3.3V.

The board is controlled by the ESP8266 chip (a 32-Bit processor) and has a larger flash memory compared to an Arduino Uno.

This board is compatible with the Arduino IDE and with NodeMCU. The D1 R2 also features an onboard switching power supply which allows you to power the board from a power supply up to 12V.

2. 8 Independent Relays: Control up to eight different devices or circuits independently, allowing for versatile automation and control.
3. 5V DC Operating Voltage: Designed to operate with a 5V DC power supply, making it compatible with common microcontrollers like Arduino, Raspberry Pi, and others.
4. Optical Isolation (Light Coupling): Provides electrical isolation between the control and load circuits, safeguarding sensitive components from high-voltage surges.
5. High Current Capacity: Each relay supports up to 10A at 250V AC or 30V DC, allowing for the control of various high-power devices such as motors, lights, and household appliances.
6. LED Status Indicators: Each relay comes with an LED indicator that shows the current state (ON/OFF) for easy monitoring.
7. Easy Integration: Simple to interface with microcontrollers and other control systems, making it ideal for both beginners and advanced users.
8. Compact and Durable Design: Space-saving design and robust construction ensure that the module can be used in various environments, including industrial and residential setups.
9. Low Power Consumption: Efficient operation that consumes minimal power while providing reliable performance.
10. Versatile Applications: Perfect for controlling lighting, home automation, appliances, industrial machines, and other electronic devices.
11. Multi-functional: Use for multiple projects, from home automation to industrial control systems, enhancing your system's capabilities with minimal effort.

2. 2 Independent Relays: Allows you to control two separate devices or circuits independently.
3. 12V DC Operating Voltage: Designed to operate with a 12V DC power source, compatible with a variety of systems and power supplies.
4. Optical Isolation (Light Coupling): Built-in optocouplers isolate the control side from the load side, providing safety by protecting the control circuit from high-voltage spikes or surges.
5. High Current Handling: Each relay supports up to 10A at 250V AC or 30V DC, making it suitable for controlling heavy-duty devices.
6. LED Indicators: Each relay comes with an LED indicator, providing clear status feedback (on/off) for easy monitoring during operation.
7. Easy to Use: Simple interface with microcontrollers like Arduino, Raspberry Pi, or other systems, allowing for quick integration into your projects.
8. Compact Design: Small footprint for easy mounting and integration in various systems, including DIY and professional setups.
9. Low Power Consumption: Operates efficiently with minimal power draw, ensuring longevity and reliability.
10. Versatile Applications: Suitable for controlling household appliances, lights, motors, and more in both residential and industrial environments.

2. 4 Independent Relays: Controls up to four different devices or circuits simultaneously with independent relay channels.
3. 24V DC Operating Voltage: Designed to work with 24V DC power sources, making it compatible with a wide range of systems.
4. Relay Type: SPDT (Single Pole Double Throw) relays, providing flexibility for controlling different types of devices.
5. Optical Isolation: Built-in optocouplers for each relay provide electrical isolation between the control side (low voltage) and the relay side (high voltage), ensuring safety.
6. High Current Handling: Each relay supports up to 10A at 250V AC or 30V DC, allowing control of various appliances, motors, lights, and more.
7. Easy to Interface: Easily integrates with microcontrollers like Arduino, Raspberry Pi, and other control systems via simple wiring and connections.
8. LED Indicators: Each relay has a corresponding LED indicator, showing the operational status for easy monitoring.
9. Compact and Durable: The relay module features a small footprint and robust build, suitable for various environments and applications.
10. Low Power Consumption: Efficient operation that minimizes energy use while ensuring reliable performance.

• Save the configuration parameter data eeprom down with data backup battery

1. Adopted of high quality electronic components, and precision process, ensure for the durability.
2. Support all MCU control,PLC control and smart home control.
3. Applicable for automatic control switch.
4. 100% brand new and high quality.
5. Safe and reliable, suitable for industrial applications.

1. This 1 Channel 12V Relay Module is capable of actuating 240VAC/30A circuits safely – Eliminating dangers of high current circuits for users.
2. Operating Voltage – 12VDC Max Current Control – 30A Max Voltage Control (AC) – 240V Max Voltage Control (DC) – 30V
3. Output Modes – Normally Open / Normally Closed Dimensions – 40 x 34 x 22mm Weight – 35g
4. Despite being able to actuate high current and high voltage circuits, the relay itself operates on up to 12VDC, which is safe for users if a fault occurs.
5. Without a relay, if the high current circuit were to leak directly into a user, it could cause serious harm to a user and damage to the components.

1. High-Accuracy Measurement: Measures current, voltage, and power with ±1% precision.
2. I2C Interface: Communicates easily with most microcontrollers including Arduino, Raspberry Pi, and ESP32.
3. Bi-Directional Current Sensing: Measures current flowing in either direction for complete power analysis.
4. Wide Operating Voltage: Supports voltage measurement up to 26V and current sensing up to ±3.2A.
5. Onboard 12-bit ADC: Provides high-resolution measurements via I2C.
6. Low Power Consumption: Ideal for battery-powered and energy-efficient projects.
7. Compact PCB Design: Easily integrates into space-constrained applications.
8. Adjustable I2C Address: Supports multiple modules on a single I2C bus (via address configuration).

2. Compact 5MM Size: The small 5mm size makes it ideal for use in applications where space is limited, while still providing high performance.
3. Mercury Ball Mechanism: Utilizes a mercury ball inside the switch to create an electrical connection when the switch is tilted, providing precise tilt detection.
4. Sensitive and Accurate: The mercury ball reacts to the slightest tilt, making this switch highly sensitive and accurate for orientation detection.
5. Durable and Reliable: Made with high-quality materials, the switch is durable and offers long-lasting performance.
6. Easy to Use: Simple to integrate into various projects, making it a popular choice for DIY electronics, robotics, and automated systems.
7. Low Power Consumption: Designed for energy efficiency, ensuring minimal impact on your circuits and battery life.
8. Versatile Applications: Ideal for use in tilt-sensitive devices such as alarm systems, motion sensors, vibration detectors, and more.
9. Stable Performance: Offers stable and consistent operation even in varying environmental conditions.

1. This kit uses ARM Cortex-M3 processor (STM32F103C8), and includes a 2.4-inch color TFT display screen.
2. Accuracy: 12Bit
3. Adjustable vertical displacement, and with instructions.
4. Available rising or falling edge trigger.
5. Analog Bandwidth: 0-200KHz

1. The width of the optical coupling slot: 5mm
2. With a signal output indication.
3. Single signal output
4. The circuit board output switch!
5. The output valid signal is low.

1. Voltage: 3.0 V – 5 V
2. Transmit power: 58mW
3. Input current: 30mA
4. Wavelength: 650nM
5. Operating temperature: -36°C ~ 65°C

• Low internal resistance and high frequency capacitors can make the power supply more stable.
• Complete tools, you can operate it yourself, suitable for DIY enthusiasts, simple operation.
• The upper and lower bold and tin design make the internal resistance smaller and the current strong.
• Portable, stable and reliable, lightweight and convenient for carry and storage.
• Fit for 36‑45ah lead‑acid batteries with good performance and low internal resistance and etc.

2. High Sensitivity: Capable of detecting even minor vibrations and knocks.
3. Analog Output: Provides a variable voltage output based on the intensity of the knock, enabling more precise detection.
4. Easy Integration: Simple connection to microcontrollers, making it ideal for DIY projects and prototypes.
5. Compact Design: Space-saving module fits easily into various enclosures and designs.
6. Low Power Consumption: Efficient operation, suitable for battery-operated applications.
7. Wide Operating Voltage: Typically operates within a range of 3.3V to 5V, offering flexibility in power supply.
8. Durable Construction: Designed to withstand repeated use without degradation in performance.
9. Versatile Applications: Useful in robotics, smart home systems, and security devices.