The Buzzer Sensor 5V is a reliable component designed to deliver a continuous single tone at 70dB, making it ideal for various alert and notification applications. With a through hole mounting style, this sensor operates within a supply voltage range of 2-4V.

Key Features:

• 70dB sound level at 1 metre
• Continuous tone length
• Single tone
• Through hole mounting style
• Supply voltage: 2-4V
• Maximum decibel: 70dB
• Diameter: 6.7 mm
• Black body colour
• Operating temperature range: -30°C to +70°C

Specifications:

• Using the NTC thermistor sensor , good sensitivity
• The comparator output signal clean waveform is good , driving ability, than 15mA
• Adjust the temperature distribution bit detection threshold
• Working voltage 3.3V-5V
• The output format: Digital switching output (0 and 1)
• With bolt holes for easy installation
• Using a wide voltage LM393 comparator

Package:

1x Digital Thermal Temperature Sensor Module for Arduino (Thermistor)

• High Accuracy: ±1% accuracy, ideal for precise current measurements.
• Wide Frequency Range: Suitable for 50Hz to 1KHz frequency applications.
• High Dielectric Strength: AC 3500V/1min dielectric strength for enhanced safety.
• Durable Construction: Flame resistance rated UL94-V0 and withstands temperatures between -25°C to +60°C.

• Photosensitive Switch: Detects light levels for automatic switching.
• High Load Power: Supports AC 250V/10A and DC 30V/10A for various electrical applications.
• Compact Design: Easy to integrate into projects and systems.

• Non-Contact Switching: Detects magnetic fields without physical contact.
• Voltage Compatibility: Operates at DC 5V, making it ideal for microcontroller projects.
• KY-003 Model: Designed for magnetic, speed, and capacitance induction applications.
• Arduino Compatible: Perfect for DIY electronics and robotics projects.

• Voltage: 3.3V
• Resolution: 500dpi
• Backlight Color: Blue
• Interface: TTL Serial

• High Sensitivity: Maximum sensitivity at 570 nm with a wide half-angle of ±60° for better light detection
• Ambient Light Detection: Ideal for measuring ambient light intensity
• Visible Light Spectrum: Sensitive to visible light, while inhibiting infrared (IR) spectra
• Versatile Application: Can be used in applications where light intensity needs to be measured, such as in lighting control systems or environmental monitoring

• Light Detection: Detects ambient brightness and light intensity.
• Adjustable Sensitivity: Sensitivity can be adjusted via the blue digital potentiometer.
• Wide Voltage Range: Operates within 3.3V to 5V voltage range.
• Digital Output: Provides digital switching outputs (0 and 1) via the D0 pin.

• Accurate Turbidity Measurement: Detects water clarity using light transmission
• Analog & Digital Output: Supports both analog (0~4.5V) and digital signal output
• Adjustable Sensitivity: On-board potentiometer for threshold tuning
• LED Indicators: Red for power, green for digital output status

MQ-135 Gas Sensor is designed for wide detecting scope including NH3, NOx, alcohol, Benzene, smoke, and CO2. This sensor offers fast response, high sensitivity, and long-term stability, making it ideal for various applications.

• Wide detecting scope
• Fast response and high sensitivity
• Stable and long life
• Operating Voltage: +5V
• Detects NH3, NOx, alcohol, Benzene, smoke, CO2
• Analog output voltage: 0V to 5V
• Digital output voltage: 0V or 5V (TTL Logic)
• Preheat duration: 20 seconds

Can be used as a digital or analog sensor, with adjustable sensitivity via potentiometer.

The FPM10 Fingerprint Recognition Module is versatile and easy to use with various microcontrollers and embedded systems. This module offers stable performance and comprehensive functions, including fingerprint collection, registration, comparison, and search. Ideal for security applications such as fingerprint door locks, safes, and access control systems.

• Supply Voltage: DC 3.6 ~ 6.0V
• Operating Current: <120mA
• Fingerprint Image Input Time: <1.0 seconds
• Window Area: 14 × 18 mm
• Storage Capacity: 1000 templates
• False Recognition Rate (FAR): <0.001%
• False Rejection Rate (FRR): <1.0%
• Host Computer Interface: UART (TTL logic level)
• Communication Baud Rate: (9600 × N) bps

• Nine Gesture Recognition Modes: Includes Up, Down, Left, Right, Push, Pull, CW, CCW, and Wave gestures.
• High Gesture Speed: Gesture speed ranges from 60°/s to 600°/s in Normal Mode and 60°/s to 1200°/s in Gaming Mode.
• Proximity Detection: Built-in proximity detection for improved performance.

The 1-Channel Flame Sensor Module for Arduino is an essential component for fire detection systems. With an adjustable precision potentiometer and wide voltage range, this sensor is perfect for various applications. Key features include:

• Operating voltage: 3.3V-5V
• LM393 comparator with wide voltage
• Small panel output interface for direct connection to microcontroller IO port
• Adjustable precision potentiometer for sensitivity adjustment
• Highly sensitive to flame and ordinary light
• Detection wavelength range: 760 nm to 1100 nm
• Detection angle: 60 degrees
• Output with clean signal, good waveform, strong driving ability (>15mA)
• Fixed bolt hole for easy installation

• Onboard Precision Micro Voltage Transformer
• High-Precision Operational Amplifier Circuit for exact signal sampling and compensation
• Adjustable Output Mode for measuring AC voltage up to 250V
• Output Signal: Sine wave with a median (DC component)

Specifications:

• Module supply voltage: DC 5V
• Working environment temperature: -40 ° C ~ 85 ° C
• Communication interface: IIC
• Ultra low power consumption: programmable sample rate and LED current
• Save power; ultra-low standby current (0.7μA, typical)
• Size: 5.6mm x 3.3mm x 1.55mm

Package:

1x High Accuracy I2C MAX30105 Particle Optical Sensor Photodetectors Board Module Smoke Detection Flame Module 1.8V

• Onboard TTP224 capacitive touch sensor IC
• Supports 4 touch keys for multi-button applications
• Flexible working voltage: 2.4V - 5.5V
• Adjustable output modes and key output modes