Geared Motor with Encoder (6V 1:48 L Shape)

This detection module that allows you to detect your heart rate and blood oxygen level from your Arduino project. You can monitor your blood oxygen level yourself to avoid going to the doctor or pharmacy on purpose. Simply press the sensor with your finger and wait for the reading of hemoglobin (Spo2), heart rate and Perfusion Index (PI%). It is a solution as an integrated heart rate sensor and pulse oximetry, which includes two LEDs, a photodetector and is optimized for analog low noise optics.

TIP120 Low voltage Darlington transistor NPN 60V 5A with collector-emitter saturation pack 5ps features:
- Package / Case: TIP120 TO-220
- Manufacturer: ST Microelectronics
- VCBO collector-base voltage: 60V
- VCEO collector-emitter voltage: 60V
- VEBO emitter-base voltage: 5V
- Collector continuous current: 5A
- DC MAX collector current: 8A
- Maximum power dissipation: 65W if T <= 25ºC
- Storage temperature: -65ºC to + 150ºC
- Maximum operating junction temperature: + 150ºC

12 Bars of 7mm Hot Silicone Glue Gun features:
- Hot melt adhesive
- Blister packaging
- Includes 12 silicone bars 7.2mm x 100mm

10x Photoresistor 5mm GL5516 LDR 5-10k for Arduino.
Photoresistor is a resistor whose resistance decreases when increasing the intensity of the light that falls on it. 10x Photoresistor GL5516 LDR features:
- Model: GL5516
- Spectral peak: 540nm
- Maximum DC voltage: 150V
- Maximum power: 90mW.
- Resistance with light (10lux): 5-10KΩ
- Resistance with darkness (0lux): 0.5MΩ
- Response time: 20ms
- Operating temperature: -30ºC - 70ºC

The piezoelectric buzzer has a simple structure in which a ceramic piezoelectric disk is affixed to a vibrating plate. An alternative voltage applied to this element will cause a contraction or diametrical expansion of the element. This feature is used to fold a vibrating plate, which generates sounds. 2x Passive Buzzer 5V features:

- Input voltage: 3V to 12V
- Diameter: 12mm
- Height: 7.5mm
- Pin spacing: 6.5mm
- Impedance: 16 Ohm
- Working frequency: 2 to 5 KHz
- Quantity: 1 unit

Continous Rotation 360 Degree Servo S3003 features:
- Operating voltage: 4.8 V to 6 V
- Torque max.: 4.1kg / cm (6V)
- Operating speed: 0.23sec / 60degree (4.8V), 0.19sec / 60degree (6V)
- Radio max.: 360º
- Temperature range: -20º + 60ºC degrees
- Weight: 38 g
- Cable length: 26cm
- Dimensions: 40.5 x39x 20 mm
- Servo connector: JR
- Chinese manufacture

Sound detection module for Arduino projects, smart cars. Analogical Acoustic Sensor 4-Pin Microphone Sound Detector Module features:
- Adjustable High Sensitivity Acoustic Sensor
- LM393 comparator chip
- Integrated indicator LED
- AO analog output, output voltage signal in time real microphone
- DO digital output, sensitivity adjustable through potentiometer
- Frequency Range between 30 and 15000 Hz
- Power 4 ~ 6V
- Measurements 36x16x15mm

BD137 Plastic Medium-Power Silicon NPN Transistors pack 5ps features:
Material: Silicon Polarity: N-P-N Encapsulated: TO 126 Audio amplifier, driver
VCBO collector-base voltage: 60V VCEO collector-emitter voltage: 60V VEBO emitter-base voltage: 5V Collector continuous current: 1.5A Typical gain of direct current. hfe: 40-160
Maximum power dissipation: 12.5 Watt if T <= 25ºC Working frequency: 250 MHz

Typical gain of direct current. hfe: 40-160