

The A3144 Hall Effect Sensor Magnet Detector Switch for Arduino is a switch that will turn on/off in the presence of a magnetic field. If no magnetic field is present, the signal line of the sensor is HIGH (3.5 V). If a magnetic field is presented to the sensor, the signal line goes LOW, at the same time the LED on the sensor lights up. An onboard LED will also indicate the presence of a magnetic field. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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General Specification | |
Color | Black |
Operating Voltage (VDC) | 5 |
Power Consumption at Rest | 3mA |
Power Consumption when Switched | 8mA |
Operating Temperature (°C) | -40 to 90 |
Length (mm) | 20 |
Width (mm) | 16 |
Weight (gm) | 2 |
Shipment Weight | 0.005 kg |
Shipment Dimensions | 3 × 3 × 1 cm |
Please allow 5% measuring deviation due to manual measurement.
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1 x Hall Effect Sensor 6851/A3144
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The latest price of Hall Effect Sensor 6851/A3144 in Bangladesh is BDT 28 You can buy the Hall Effect Sensor 6851/A3144 at best price from our RoboticsBD or visit RoboticsBD Office.
Please note that the product information provided on our website may not be entirely accurate as it is collected from various sources on the web. While we strive to provide the most up-to-date information possible, we cannot guarantee its accuracy. We recommend that you always read the product labels, warnings, and directions before using any product. |
Product Images are shown for illustrative purposes only and may differ from the actual product. |
Reference: RBD-0311
Working Voltage: 5 to 18V DC (min tested working voltage 4.5V). RoboticsBD Max current draw: 15mA @ 5V. Working Flow Rate: 1 to 30 Liters/Minute. Maximum water pressure: 2.0 MPa. Flow rate pulse characteristics: Frequency (Hz) = 7.5 * Flow rate (L/min). RoboticsBD
Reference: RBD-0686
Supply voltage 5-30VDC Detection distance 10mm (effective detection distance 0-10mm) Load current 150MA (no more than) Output form NPN three lines
Reference: RBD-0822
S49E hall sensor Features wide-range voltage comparator LM393 Signal output indicator Analog / Digital output
Reference: RBD-1192
Digital Output Hall-effect sensor. Operating voltage: typically 5V. Output Current: 25mA. It can be used to detect both the poles of a magnet.
Reference: RBD-1199
Low-noise output Fast power-on time Ratiometric rail-to-rail output 4.5 to 6.0 V operation Solid-state reliability Factory-programmed at end-of-line for optimumperformance Robust ESD performance
Reference: RBD-1699
Brand: SparkFun Electronics
Simple switches Detect a collision SPST switch
Reference: RBD-0386
1 Hz output pin SQW. 32 KHz output pin 32K. RoboticsBD Voltage Supply: 2.2 V ~ 5.5 V (for RTC). Time Format: HH: MM: SS (12/24 hr). Date Format: YY-MM-DD-dd. DS 3231 based RTC with 2032 Battery Holder. RoboticsBD Battery is not included Note: Batteries not included.
Reference: RBD-2148
Non-contact detection Suitable for liquids of various densities and forms Easy installation for all kinds of detection occasions Compatible with containers of various materials and thicknesses Reliable performance with anti-interference ability
Reference: RBD-0233
Brand: SparkFun Electronics
Description: This is the LSM9DS0, a versatile motion-sensing system-in-a-chip that houses a 3-axis accelerometer, 3-axis gyroscope, and 3-axis magnetometer. That’s right, 9 degrees of freedom (9dof) from a single IC!
Reference: RBD-0354
Approximates Human eye Response Extremely wide dynamic range 1 to 600,000,000 Counts Lux Range: 188u Lux sensitivity, up to 88,000 Lux input measurements Voltage range: 3.3-5V into the onboard regulator This board/chip uses I2C 7-bit addresses 0x29 and 0x28. RoboticsBD
Reference: RBD-0995
Diameter: 5mm No. of Pins: 2 Type of Mounting: PCB Through Hole Maximum Operating Temperature: +800°C (Approx.) Dark resistance:1-20 Mohm
Reference: RBD-0419
Features: Built-in Red, IR, and Green LEDs 5V operation (3.3V is allowed, but green LED is not guaranteed to operate) Applications include presence detection, distance sensing (18" max), pulse oximetry, blood oxygen saturation level (SpO2), smoke and particle detection Documents: Schematic Eagle Files Hookup Guide Datasheet (MAX30105) MAX3010x Sensor...
Reference: RBD-0104
Chip built-in 16bit AD converter, 16-bit data output Driver Chip: MPU6050 Operating Voltage: 3-5V DC Communication: I2C/IIC Protocol Gyro Range: ± 250, 500, 1000, 2000 °/s Accelerometer Range: ± 2 ± 4 ± 8 ± 16 g
Reference: RBD-2082
Dimension: 2.5 x 1.5 x 1.5 cm. Receiving angle: 90 °. Working voltage: 2.7 ~ 5.5V. Frequency: 37.9KHz Receiving range: 18m. Weight: 4 gm.
Reference: RBD-1757
Supply Voltage: 3.3 V/ 5V. Interface Type: I²C, SPI. Sensing Range: ±2g, ±4g, ±8g, ±16g. Sensitivity: X: 28.6 LSB/g. Y: 31.2 LSB/g. Z: 34.5 LSB/g. Ultra Low Power: 40µA in measurement mode, 0.1µA in standby@ 2.5V. Free-Fall Detection. Tap/Double Tap Detection.
Reference: RBD-2169
US1000-21A ultrasonic flow sensor ultrasonic heat meter sensor Underwater Sensor high-frequency ultrasonic sensor Model: US1000-21A High frequency type ultrasonic underwater sensor Transceiver category Nominal frequency: 1.0MHz ± 5% Bandwidth: 200.0KHz
Reference: RBD-2221
Microwave sensor module Uses 10.525 GHz band to detect movement Easy to use, can be connected directly to a microcontroller Built-in amplifier Ideal for use with a microcontroller Widely used in industrial, transportation, and civil devices
Reference: RBD-1203
Distance measuring range: 10 cm to 80 cm Output type: Analog voltage Output voltage differential over distance range: 2.05 V (typical) Update period: 38 ± 10 ms
Reference: RBD-0720
Temperature detection of the two-dimensional area: 8 × 8 (64 pixels). Digital output (capability of temperature value output). Compact SMD package (adaptively to reflow mounting). RoHS compliant. RoboticsBD
Reference: RBD-0564
Onboard precision microcurrent transformer. Onboard sampling resistor. The module can measure AC currents less than 5A, the corresponding analog output 5A/5mA. Rated input current: 5A Rated output current: 5mA Change: 1000: 1 The linear range: 0 ~ 10A (100 ohms) Linearity: 0.2%
Reference: RBD-0555
Low-noise analog signal path Device bandwidth is set via the new FILTER pin 5 µs output rise time in response to step input current Small footprint, low-profile SOIC8 package 2.1 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8 Supply Voltage: 4.5V~5.5V DC Measure Current Range: 30A Sensitivity: 100mV/A
Reference: RBD-1049
Operating voltage: 5V Provide both digital and analog output Adjustable sensitivity Output LED indicator Compatible with Arduino TTL Compatible Bolt holes for easy installation
Reference: RBD-0142
Description: Fingerprint scanners are awesome. Why use a key when you have one right at the tip of your finger? Unfortunately, they’re usually unreliable or difficult to implement. Well not anymore! We’ve found this great fingerprint module from ADH-Tech that communicates over TTL Serial so you can easily embed it into your next project.
Reference: RBD-0691
Supply voltage: 5V Communication: Serial communication (TTL level) Operating istance: 6-10 meters
Reference: RBD-1857
Output: NPN Model KT-RG22 Coaxial reflection type Supply voltage DC10-30V±10% Can be used in all kinds of machines
Reference: RBD-0493
Temperature Range : 0C-400C Shield Material : Metal Total Length(Approx.) : 2M / 6.6 Ft; Weight : 46g;
Reference: RBD-1367
RGB trichromatic limiting resistor to prevent burnout PWM adjusted color mixing Working voltage: 5V LED drive mode: Common cathode driver
Reference: RBD-2125
Phototransistor output No contact surface sensing Miniature package
Reference: RBD-0319
Type K Type. Mounting thread: M6 Temperature Range:0-600°C. RoboticsBD
Reference: RBD-0663
Power supply voltage(VCC): 2.0, 3, 5.5 V. Output high VOH: 0.8VCC V Output low VOL: 0.3VCC V Response time (touch mode) : 60 mS Response time (low power mode) : 220 mS Can replace the traditional touch of a button Four M2 screws positioning holes for easy installation RoboticsBD
Reference: RBD-1648
FPC1020A is a secondary development module for fingerprint recognition designed for SCM. Fingerprint identification capacity: 150 fingerprints, identification time is less than 1 second, can be customized large capacity Capacitive surface array semiconductor fingerprint sensor Support finger 360 rotation recognition Supported Operating Systems: Windows
Reference: RBD-1934
Dual signal output (analog output and TTL level output) The TTL output effective signal is low. Analog output 0 ~ 5V voltage, the higher the concentration the higher the voltage. Good sensitivity to hydrogen sulfide, liquefied gas, natural gas, city gas, and smoke. with long service life and reliable stability fast response recovery characteristics
Reference: RBD-1946
Comes with the BME280 sensor. Pressure accuracy of ±1 hPa. Temperature accuracy ±1.0°C. Altimeter accuracy ±1 meter. Humidity: +-3%
Reference: RBD-0553
Supply voltage: DC 3.6 ~ 6.0V / 3.3V Supplying Supply Current: Current: <120mA Peak current: <140mA Fingerprint image time: <1.0 seconds
Reference: RBD-1848
Compact Design Country Specific pressure Multiple Displayable Unit Multi-colored, two-part display Alphanumeric display
Reference: RBD-0020
Model: SG90 Weight: 9 gm Operating voltage: 3.0V~ 7.2V Servo Plug: JR Stall torque @4.8V : 1.2kg-cm Stall torque @6.6V : 1.6kg-cm Note: Product images/ Components brand may vary from actual product as our stock rotates.
Reference: RBD-1957
Input Voltage: 12V Connector: 5.5mm DC Jack Output power on/off switch Two-row multiple pin outputs, easy to use and connect Outputs 3.3V DC at 800mA maximum current Outputs 5.0V DC at 800mA maximum current Outputs 12V DC (the 12V output is directly connected to the input, i.e. with 12VDC input, this output will be 12VDC; with 9VDC input, this output will...
Reference: RBD-1491
Capacitance: 10uF Voltage: 25V Mounting: Through Hole Material: Aluminum Tolerance: ±20 %
Reference: RBD-0653
Can be manually broken for the length needed. Connector: Pin Header 2.54mm Pitch Connector type: Pin Strips Male Number of pins: 40 Right angled male berg strip. (L Shaped)
Reference: RBD-0393
Dimensions: 40 x 27 x 15 (LxWxH) mm. RoboticsBD Weight: 10gm (without Hat). 2.54mm pin interface leads. Operating Voltage: 5V. Long service life and stable performance. Standard interface and electronic building blocks. Widely use in Arduino DIY projects. RoboticsBD
Reference: RBD-1482
Capacitance: 100uF Voltage: 50V Mounting: Through Hole Material: Aluminum Tolerance: ±20 %