1. With high quality audio decoder, supports MP3 and WAV audio formats.
2. Sampling rates supported: 8/11.025/12/16/22.05/24/32/44.1/48(KHz).
3. 24 bit DAC output and supports dynamic range 90dB and SNR 85dB.
4. Supports key control mode, parallel control mode and UART serial port control mode.
5. Possible to update audio files in the SD card via the USB connecting with PC.
6. Supports maximum 3000 audio files under the root directory of the storage device.
7. Supports maximum 99 folders and each folder stores maximum 255 audio files.
8. Supports playback of multiple audio files one by one without pause.
9. Supports advertisement inter-cut function during playing a sound.
10. Built-in double 3 watts amplifiers that can drive two 3 watts speakers directly.
11. Adjustable 30 levels sound volume.

1. Calibrated directly in Degree Celsius (Centigrade)
2. Linear at 10.0 mV/°C scale factor
3. 0.5°C accuracy guarantee-able (at a25°C)
4. Suitable for remote applications
5. Low cost due to wafer-level trimming
6. Operates from 4 to 30 volts
7. Less than 60 mA current drain
8. Low self-heating, 0.08°C in still air
9. Non-linearity only 0.25°C typical

1. Small size
2. High sensitivity
3. Fast response temperature
4. good performance
5. Precision and high reliability

1. Power: 3.3 – 5V
2. Detector spacing: 16mm
3. Mounting holes size: 3mm
4. Detection range: 1 – 5cm

1. Detection distance: 2-40cm
2. IO Interface: 4-wire interfaces (- / + / S / EN)
3. Output signal: TTL level
4. Adjustment: adjust multi-turn resistance
5. Effective angle: 35 .

1. Sensing range: 3 – 80cm.
2. Input voltage: 5VDC.
3. Current Consumption: 300mA.
4. Digital Output.
5. Cable length: 1 m.
6. Diffuse reflective type.

1. Output Sensitivity: 1.0 ± 0.1 mV / V.
2. Two selectable differential input channels.
3. On-chip active low noise PGA with the selectable gain of 32, 64 and 128.
4. On-chip oscillator requiring no external component with optional external crystal.
5. On-chip power-on-reset.
6. Measurement Resolution: 24 bit.

1. Use IR LED and an optical transistor to detect pulsation in fingers
2. Small and Compact module
3. Easy to use.

1. Wide Working Voltage Range: DC 4.5V- 20V
2. Current Drain: <60uA
3. Detection Angle: <140°
4. Detection Distance: 3 to 7m (can be adjusted)
5. Blockade time: 2.5s (Default)
6.  Work temperature: -20-+80°C

1. Operating Voltage(V): 3- 5
2. Operating Current(mA): 2
3. Communication protocol: I2C
4. Power saving mode
5. Automotive grad
6. Small size, low cost

1. Acceleration and Gyroscope
2. Power Supply: DC3.3V-5V
3. Chip: MPU9250
4. Size: 22 mm x 17 mm.
5. Gyro range : ± 250 500 1000 2000 ° / s
6. Acceleration range: ± 2 ± 4 ± 8 ± 16g
7. 6 DOF modules

1. 3-axis magnetic electronic compass.
2. Precise heading information.
3. Operating Voltage: 3 -5 V DC.
4. Driver Chip: HMC5883L.
5. Communication: I2C protocol.
6. Measuring range: ± 1.3-8 Gauss.

1. Easily customizable to a wide range of sizes
2. Cost-effective
3. Ultra-thin; 0.45 mm
4. Robust; up to 10 million actuations
5. Simple and easy to Integrate.

1. Shape: Circular.
2. Sensing Area diameter (inch): 0.5.
3. Min Force: 100 gm.
4. Max Force: 10Kg.
5. Length (mm): 60.
6. Weight (gm): 2.

1. Easily customizable to a wide range of sizes
2. Cost-effective
3. Ultra-thin; 0.45 mm
4. Robust; up to 10 million actuations
5. Simple and easy to Integrate.

1. Angle Displacement Measurement
2. Bends and Flexes physically with motion device
3. Simple Construction

1. Flex length: 5.6 cm.
2. Total Length: 2.2″ (7 cm).
3. Life Cycle : >1 million.
4. Height : 0.43mm (0.017″),
5. Flat Resistance: 10K Ohms ±30%.
6. Power Rating: 0.5 Watts.

1. Spectrum range: 760nm ~ 1100nm
2. Detection angle: 0 – 60 degree
3. Power: 3.3V ~ 5.3V
4. Operating temperature: -25℃ ~ 85℃
5. Dimension: 27.3mm * 15.4mm
6. Mounting holes size: 2.0mm

1. High-Speed, High-Accuracy Fingerprint Identification using the SmackFinger 3.0 Algorithm
2. Read and Write Fingerprint Templates and Databases
3. Simple UART protocol (Default 9600 baud)
4. Capable of 1:1 Verification and 1:N Identification
5. 360° Fingerprint Recognition

1. Operating voltage (v): 4.2 ~ 6 VDC
2. Current consumption: ≤75mA
3. Verification Speed: 0.2 sec
4. Scanning Speed: 0.3 sec
5. Character file size: 256 bytes
6. Template size: 512 bytes

1. Operating Voltage – 3.3V
2. Analog Output
3. Leads-Off Detection
4. Shutdown Pin
5. LED Indicator
6. 3.5mm Jack for Biomedical Pad Connection or Use 3 pin header

1. A probe by new original installation import DS18B20 temperature sensor chip.
2. Stainless steel tube encapsulation waterproof moistureproof prevents rust.
3. Stainless steel shell (6 * 45 mm), lead length 100 mm (shielding wire) use stability;
4. 3.0 V-5.5 V power supply;
5. Temperature range wide: -55 ℃ ~ + 125 ℃;
6. Without the external components, the unique single bus.

1. Multidrop capability simplifies distributed temperature sensing applications
2. Thermometer resolution is user-selectable from 9 to 12 bits
3. Converts temperature to the 12-bit digital word in 750ms (max.)
4. User-definable nonvolatile (NV) alarm settings
5. Supply Voltage (V): 3 to 5.5
6. Temperature Range(°C): -55 to +125
7. Measuring Accuracy(°C): ±0.5
8. Resolution: 9bits to 12bits (Selectable)

1. Good Quality Water Flow Sensor
2. Operating Voltage: 12VDC
3. Flow Range: 2-100L/Min
4. Suitable for Water Pressure Below 1.75MPa

1. Supply voltage: 5V
2. Temperature range:-40-80℃ resolution0.1℃ error <±0.5℃
3. Humidity range:0-100%RH resolution0.1%RH error±2%RH
4. Sequence of the line:VCC,GND,S
5. Size: 38 x 20mm

1. Measuring range: temperature -40-80 ℃; humidity 0; 99.9%RH
2. Measurement accuracy (25℃): temperature: + 0.5; humidity: + 2%RH (10; 90%RH)
3. Resolution: temperature: 0.1 ℃, humidity: 0.1%RH
4. Attenuation value: temperature: <1℃ / year; humidity: < 1%RH/ years
5. High precision
6. Capacitive type
7. Full range temperature compensated
8. Relative humidity and temperature measurement
9. Calibrated digital signal
10. Outstanding long-term stability

1. Low power consumption.
2. Relative humidity and temperature measurement
3. All calibration, digital output
4. Excellent long-term stability
5. Quality: Normal Quality

1. Low power consumption
2. Power supply voltage of 2.5 V ~ 5 V
3. working current is microamps.
4. High sensitivity
5. High stability
6. Wide detection range: 240 nm to 370 nm
7. Wide Angle: 130 degrees
8. Schottky type photosensitive diode
9. Size: 11 mm x 27 mm

1. High precision determination accurate to 1 Lu for different lights
2. Operating Voltage: 3-5VDC
3. Built-in 16bit A/D converter
4. I2C interface

1. Measuring range: temperature -40-80 ℃; humidity 0; 99.9%RH
2. Measurement accuracy (25℃): temperature: + 0.5; humidity: + 2%RH (10; 90%RH)
3. Resolution: temperature: 0.1 ℃, humidity: 0.1%RH
4. Attenuation value: temperature: <1℃ / year; humidity: < 1%RH/ years
5. High precision
6. Capacitive type
7. Full range temperature compensated
8. Relative humidity and temperature measurement
9. Calibrated digital signal
10. Outstanding long-term stability

1. Used to measure or detect Alcohol
2. Can be used as a digital or analog sensor
3. Long life and low cost
4. Simple drive circuit

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. 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 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8
6. Supply Voltage: 4.5V~5.5V DC
7. Measure Current Range: 20A
8. Sensitivity: 100mV/A

1. For beginners who are interested in Arduino
2. A complete set of Arduino’s most common and useful electronic components
3. Infrared sensor receiving module
4. Laser sensor module
5. Temperature and humidity sensor module
6. Infrared sensor module
7. 5v relay module
8. Obstacle avoidance sensor module.

1. The width of the optical coupling slot: 5mm
2. Single signal output.
3. The circuit board output switch!
4. The output valid signal is low.
5. Can be used for workpiece counts.
6. It can also be used for industry counting, motor speed testing.