The MQ-7 Carbon Monoxide Gas Sensor Module is designed to detect CO gas with high accuracy. Operating at 5V DC, this sensor can detect concentrations ranging from 100 to 10000ppm. It provides both analog and TTL output signals, making it versatile for various applications.

Key Features:

• Main Chip: MQ-7 gas sensor
• Working Voltage: 5V DC
• Detection Range: 100 to 10000ppm
• TTL Output: Valid signal is low
• Analog Output: Provides variable voltage based on gas concentration

Specifications:

• Model: LM35
• Temperature Range: -55°C to +150°C
• Accuracy:
  • ±0.5°C at 25°C
  • ±0.8°C over -55°C to +150°C
• Output Voltage: 10mV per °C
• Operating Voltage: 4V to 30V DC
• Current Consumption: 60µA
• Response Time: Less than 1 second
• Package Type: TO-92, SO-8, TO-220
• Linear Output: 0.1V to 1.5V corresponding to 0°C to 150°C
• Self-heating: Less than 0.1°C in still air

Package:

1x LM35 Analog Temperature Sensor

Easily measure pH levels with the Digital LCD pH Meter Pen. This high-accuracy tester features a large LCD display, fast results, and a compact design, making it ideal for aquariums, swimming pools, spas, school laboratories, and more.

Key Features:

• Easy to Use: Simply immerse the electrode for quick readings on a large LCD display
• Wide Application: Ideal for aquariums, fishing, pools, spas, laboratories, food & beverage, drinking water
• Auto Calibrated: Built-in calibration with 2 buffer powders, just press a button to calibrate
• Fast and Accurate Results: Resolution of 0.1 pH, Accuracy: ±0.1 pH
• Compact Portable Design: Lightweight and pocket-sized for easy carrying

• Compact Size: Small, space-saving design for versatile installation
• Lightweight: Easy to handle and install
• Sealed Case: Resistant to baking with high accuracy
• Long Service Life: Rated for 10,000+ cycles at the rated load

Ensure precise temperature measurements with the Waterproof Thermostat Accuracy Temperature Sensor. Featuring a 3435 NTC 10k probe, this sensor is designed for reliable performance in a variety of applications, including water heaters, refrigerators, and air conditioners.

• Material: Tin plating copper wire
• Output signal: Digital type
• Measurement range: -20℃ to 105℃
• Length of wire: 21 inches
• Size of probe: 5 x 25 mm
• Output: 2 wires
• Type: NTC 10k 3435±1%
• Probe insulation: >100MOhm
• Pressure value: 4000V, 5s no breakdown when electrified
• Stress sustain: 30N for 1 minute, no deformation

Package Includes: 1 x Temperature Temp Sensor Probe Thermometer Waterproof Cable

Discover the HC-SR04 Ultrasonic Distance Sensor Module, perfect for precise distance measurement and proximity detection in various projects in Bangladesh. Operating at DC 5V, with a 40 KHz ultrasonic frequency and a measuring angle of 15°, this module is ideal for robotics and automation applications.

• Usable temperature range: -55°C to 125°C (-67°F to +257°F)
• 9 to 12 bit selectable resolution
• 1-Wire interface, requires only one digital pin for communication
• Unique 64-bit ID burned into the chip

• Wide Detection Range: 10cm to 80cm for versatile applications.
• Infrared Sensing: Uses infrared technology for accurate distance measurement.
• Compatible with Arduino: Easily integrates with Arduino boards for various projects.
• Compact Size: Ideal for space-constrained applications.

• Compatible with AD8232 and other ECG systems for versatile use.
• Made from high-quality non-woven fabric for comfort and durability.
• Large size of approximately 50.5 mm in diameter ensures good contact with the skin.
• Easy to use and apply, making it suitable for both clinical and home settings.

• High Sensitivity: Detects a wide range of combustible gases, including LPG, propane, and hydrogen.
• Long Life & Low Cost: Offers durability and is cost-effective for various applications.
• Simple Drive Circuit: Easy to integrate with simple circuit designs for quick implementation.

Enhance your devices with our Mini Infrared Receiver IR 1838. This miniaturized receiver is ideal for remote control and IR data transmission, offering reliable performance across various applications.

• Size: 7*7*5mm
• Color: Black
• Model: VS1838B
• Frequency: 38kHz
• Applications: Audio, TV, VCR, CD, DVD, MD, Air Conditioner, Fan, and other wireless remote control equipment

The Flex Sensor 4.5" is a versatile and reliable sensor that increases resistance as it flexes. Perfect for a variety of applications, including robotics and wearable technology. Key features include:

• Length: 4.5 inches
• Patented technology by Spectra Symbol
• Used in the original Nintendo Power Glove
• Resistance changes with flex
• Connector: 0.1" spaced, breadboard friendly

• High-Quality Detection: Reliable inductive proximity sensor for precise object detection
• Wide Voltage Range: Operates within the voltage range of 6-36V DC
• Durable Construction: 12mm diameter sensor built for durability and accuracy
• Three-Wire NPN Output: Suitable for various industrial applications

• Compact Size: Small form factor with a width of 10mm and height of 7mm, ideal for tight spaces.
• Vibration Detection: Sensitive to vibrations, making it perfect for various monitoring applications.
• Easy Integration: Simple to connect to circuits for easy integration into projects.
• Wide Application: Suitable for alarm systems, shock detection, and motion sensing.

The (ZFM60) Fingerprint Recognition Module offers high security and efficient performance for various applications. Key specifications include:

• Supply Voltage: DC 3.6 ~ 6.0V
• Supply Current: 120mA (normal), 140mA (peak)
• Fingerprint Image Time: 1.0 seconds
• Window Size: 14 x 18 mm
• Signature Files: 256 bytes
• Template Files: 512 bytes
• Storage Capacity: 1,000
• False Accept Rate (FAR): 0.001 (security level 3)
• False Reject Rate (FRR): 1.0 (security level 3)
• Search Time: 1.0 seconds (mean, 1:500)
• Host Interface: UART (TTL logic level)
• Communication Baud Rate: (9600 x N) bps (N = 1 ~ 12, default N = 6, i.e., 57600bps)
• Operating Environment: Temperature: -20 to +50°C, Relative Humidity: 40% to 85% (non-condensing)
• Storage Environment: Temperature: -40 to +85°C, Relative Humidity: 85% (non-condensing)

• Normally open contact
• Non-contact switch operation
• Reliable performance from -50°C to +140°C
• Maximum load current: 0.5A