Fast delivery
Discount conditions for companies
Up to 10% discount for pupils, students and educational institutions
Europe wide shipping for 4,90€
KY-021 - Magnetic reed module, reed switch
Image similar

KY-021 - Magnetic reed module, reed switch

€1.59 *
Content: 1 Piece

incl. VAT plus shipping costs

Delivery time: appr. 1-3 days

  • F23106789
  • 0,00 kg
  • 1.8 cm x 1.5 cm x 0.2 cm (L x W x H)
Secure and fast payment with
Amazon PayKlarnaCredit cardPayPalInvoiceSofort.Prepayment
The KY-021 module consists of a breakout board with a reed switch. The switch remains on until... more

The KY-021 module consists of a breakout board with a reed switch. The switch remains on until it comes into contact with a magnetic field. The module offers a reliable switching function for various applications.

Overview:

  • Operating voltage: 3.3-5 V
  • Resistance: 10 kΩ
  • Pins: VCC, ground, signal
  • Output: digital
  • PCB dimensions: approx. 18 x 14.5 mm

Possible applications:

  • Door and window sensors
  • Magnetic detection systems
  • Robot technology
  • Security and alarm systems
  • DIY smart home applications

Scope of delivery

  • 1x KY-021 - Magnetic reed module, reed switch
Further links to "KY-021 - Magnetic reed module, reed switch"
Read, write and discuss reviews... more
Customer reviews for "KY-021 - Magnetic reed module, reed switch"
Write rating
Reviews will be activated after verification.
Please enter the string in the text field below.

The fields marked with * are required.

Cap for micro push-buttons - compatible with "Type-B" push-buttons" Cap for micro push-buttons - compatible with...
Content 1 Piece
€0.30 *
Item no: F23106741
Add
Pressure switch, black - 3-9V, LED illuminated Pressure switch, black - 3-9V, LED illuminated
Content 1 Piece
€4.33 *
Item no: F23108871
Add
3-pin rocker switch - 1-pole on/off switch, KCD1-105 3-pin rocker switch - 1-pole on/off switch,...
Content 1 Piece
€1.11 *
Item no: F23106372
Add
Pressure switch, chrome - 3V/5V, LED illuminated Pressure switch, chrome - 3V/5V, LED illuminated
Content 1 Piece
from €4.00 *
Item no: F23108618
Add
Rocker switch 2 positions KCD1-105 250V, 10A Rocker switch 2 positions KCD1-105 250V, 10A
Content 1 Piece
€0.48 *
Item no: F23109016
Add
Rocker switch KCD-1 - 12*18.8mm, waterproof, illuminated Rocker switch KCD-1 - 12*18.8mm, waterproof,...
Content 1 Piece
€2.32 *
Item no: F23109017
Add
Sold out
Photoelectric switch, light barrier - ITR20403 Photoelectric switch, light barrier - ITR20403
Content 1 Piece
€1.42 *
Item no: F23109086
Add
Rocker switch KCD-2 - 21.5*27.5mm, waterproof, illuminated Rocker switch KCD-2 - 21.5*27.5mm, waterproof,...
Content 1 Piece
€2.32 *
Item no: F23108522
Add
40 pieces breadboard cable male/male (20cm) 40 pieces breadboard cable male/male (20cm)
Content 1 Piece
€1.74 *
Item no: FUN-1010558
Add
5V touch sensor module for microcontroller 5V touch sensor module for microcontroller
Content 1 Piece
€1.48 *
Item no: F23106653
Add
Light barrier, photoelectric switch - U-shape Light barrier, photoelectric switch - U-shape
Content 1 Piece
€1.67 *
Item no: F23107474
Add
40 pieces breadboard cable male/female (20cm) 40 pieces breadboard cable male/female (20cm)
Content 1 Piece
€1.74 *
Item no: FUN-1010554
Add
KY-003 Magnetic switch - Hall effect sensor KY-003 Magnetic switch - Hall effect sensor
Content 1 Piece
€1.45 *
Item no: F23106679
Add
Ultrasonic sensor, distance sensor - HC-SR04 Ultrasonic sensor, distance sensor - HC-SR04
Content 1 Piece
€2.18 *
Item no: FUN-1010564
Add
Breadboard (plug-in board) with 830 contacts Breadboard (plug-in board) with 830 contacts
Content 1 Piece
€2.90 *
Item no: FUN-1010553
Add
40 pieces breadboard cable female/female (20cm) 40 pieces breadboard cable female/female (20cm)
Content 1 Piece
€1.67 *
Item no: FUN-1010559
Add
1602 I2C LCD module with HD44780 1602 I2C LCD module with HD44780
Content 1 Piece
€3.78 *
Item no: FUN-1010568
Add
5V traffic light, traffic light module for microcontroller 5V traffic light, traffic light module for...
Content 1 Piece
€1.54 *
Item no: F23107277
Add
Funduino SG90 servo motor (see TowerPro) Funduino SG90 servo motor (see TowerPro)
Content 1 Piece
€2.59 *
Item no: F23107201
Add
LDR 10K photoresistor LDR 10K photoresistor
Content 1 Piece
€1.26 *
Item no: F23106706
Add
Stepper motor 28BYJ-48 with ULN2003 driver board Stepper motor 28BYJ-48 with ULN2003 driver board
Content 1 Piece
€2.89 *
Item no: F23107464
Add
Relay card 1-channel 5V / 230V for Arduino Relay card 1-channel 5V / 230V for Arduino
Content 1 Piece
€1.72 *
Item no: F23107168
Add
ADXL345 - 3-axis accelerometer, tilt sensor ADXL345 - 3-axis accelerometer, tilt sensor
Content 1 Piece
€3.73 *
Item no: F23107012
Add
- 20%
ACS712 - Current sensor, 5A ACS712 - Current sensor, 5A
Content 1 Piece
€2.42 * €3.04 *
Item no: F23106659
Add
OLED - 0.96", 128x64, GVSS, I2C OLED - 0.96", 128x64, GVSS, I2C
Content 1 Piece
€4.66 *
Item no: FUN-1010561
Add
OLED - 0.91", 128x32, GVSS , I2C OLED - 0.91", 128x32, GVSS , I2C
Content 1 Piece
€3.78 *
Item no: F23106624
Add
Distance sensor, obstacle detection sensor - Infrared (IR) Distance sensor, obstacle detection sensor -...
Content 1 Piece
€1.59 *
Item no: F23107475
Add
Funduino UNO R3 microcontroller - Arduino compatible Funduino UNO R3 microcontroller - Arduino...
Content 1 Piece
€13.90 *
Item no: F23107480
Add
Motion detector, PIR sensor - HC-SR501 Motion detector, PIR sensor - HC-SR501
Content 1 Piece
€2.34 *
Item no: FUN-1010565
Add
RFID-KIT with Mifare RC522 receiver RFID-KIT with Mifare RC522 receiver
Content 1 Piece
€2.86 *
Item no: FUN-1010560
Add
Voltage sensor, 25V Voltage sensor, 25V
Content 1 Piece
€1.30 *
Item no: F23106636
Add
Humidity sensor for microcontroller Humidity sensor for microcontroller
Content 1 Piece
€1.45 *
Item no: F23107276
Add
Reed contact door switch / door and window monitoring for alarm systems Reed contact door switch / door and window...
Content 1 Piece
€1.79 *
Item no: F23106485
Add
- 2%
RGB LED board (WS2812, comparable with Neopixel) - various sizes RGB LED board (WS2812, comparable with...
Content 1 Piece
from €1.87 * €1.90 *
Item no: F23107305
Add
Microswitch - Vertical, with roller Microswitch - Vertical, with roller
Content 1 Piece
€0.96 *
Item no: F23106711
Add
SPI microSD card module - TF card reader SPI microSD card module - TF card reader
Content 1 Piece
€1.72 *
Item no: F23106642
Add
7-segment display with four digits 7-segment display with four digits
Content 1 Piece
€1.33 *
Item no: F23106605
Add
KY-039 - Sensor for pulse measurement KY-039 - Sensor for pulse measurement
Content 1 Piece
€1.45 *
Item no: F23108606
Add
DC plug-in adapter with screw terminal - male DC plug-in adapter with screw terminal - male
Content 1 Piece
€0.96 *
Item no: F23106646
Add
Drop sensor, water level sensor for microcontroller Drop sensor, water level sensor for...
Content 1 Piece
€1.23 *
Item no: F23107273
Add
100 pieces - LEDs with 5mm diameter (5 colors) 100 pieces - LEDs with 5mm diameter (5 colors)
Content 1 Piece
€1.97 *
Item no: F23107316
Add
8x8 LED matrix with MAX7219 driver board 8x8 LED matrix with MAX7219 driver board
Content 1 Piece
€3.56 *
Item no: F23106669
Add
10x Jumper cable with crocodile clips, male, 22cm 10x Jumper cable with crocodile clips, male, 22cm
Content 1 Piece
€3.00 *
Item no: F23107468
Add
- 5%
L298N H-bridge for two motors / motor drivers L298N H-bridge for two motors / motor drivers
Content 1 Piece
€3.22 * €3.40 *
Item no: F23107161
Add
- 40%
RTC module DS3231 with I2C interface RTC module DS3231 with I2C interface
Content 1 Piece
€3.05 * €5.10 *
Item no: F23106657
Add
- 16%
KY-023 - Joystick module KY-023 - Joystick module
Content 1 Piece
€1.29 * €1.54 *
Item no: F23107469
Add
Mini MP3 Player, MP3-TF-16P V3.0 for microcontroller Mini MP3 Player, MP3-TF-16P V3.0 for...
Content 1 Piece
€3.11 *
Item no: FUN-1010563
Add
- 4%
TIP!
Funduino Starter Kit for Arduino with workbook Funduino Starter Kit for Arduino with workbook
Content 1 Piece
from €47.90 * €49.90 *
Item no: F23105652
Add
Funduino Smart Home Education for ESP32 and Arduino / IOT teaching solution Funduino Smart Home Education for ESP32 and...
Content 1 Piece
€89.00 *
Item no: F23110589
Add
Shelly - Flush-mounted accessories - "RC Snubber" Shelly - Flush-mounted accessories - "RC Snubber"
Content 1 Piece
€3.40 *
Item no: F23110587
Add
- 90%
Camera 18MP AR1820HS (Arducam Pivariety) RPi 4B, 3B+, etc CM3/CM4 Camera 18MP AR1820HS (Arducam Pivariety) RPi...
Content 1 Piece
€14.90 * €149.80 *
Item no: F23110184
Add
Upgrade kits for Funduino Starter Kit Upgrade kits for Funduino Starter Kit
Content 1 Piece
from €11.90 *
Item no: F23110065
Add
Funduino Micro:Bit Starter Kit Funduino Micro:Bit Starter Kit
Content 1 Piece
€69.90 *
Item no: FUN-1010582
Add
- 11%
Grove - Thermal imaging camera / IR array MLX90640 55° Grove - Thermal imaging camera / IR array...
Content 1 Piece
€78.90 * €89.00 *
Item no: F23106132
Add
Switchable foil, PDLC, white, various sizes Switchable foil, PDLC, white, various sizes
Content 1 Piece
from €11.65 *
Item no: F23108675
Add
Soldering aid, circuit board holder - LED, up to 25x magnification Soldering aid, circuit board holder - LED, up...
Content 1 Piece
€14.71 *
Item no: F23107481
Add
Ultrasonic humidifier 12V / fog machine D25mm Ultrasonic humidifier 12V / fog machine D25mm
Content 1 Piece
€2.42 *
Item no: F23107586
Add
Mini DC-DC step-up voltage converter - 5V / 8V / 9V / 12V, 1.5A Mini DC-DC step-up voltage converter - 5V / 8V...
Content 1 Piece
€1.34 *
Item no: F23107731
Add
Soldering exercise audio amplifier LM386 -10W for loudspeakers Soldering exercise audio amplifier LM386 -10W...
Content 1 Piece
€2.61 *
Item no: F23107834
Add
SMD "Rotating LEDs" soldering exercise CD4017 SMD NE555 SMD "Rotating LEDs" soldering exercise CD4017...
Content 1 Piece
€2.64 *
Item no: F23107657
Add
Still 2 in stock!
- 11%
AMG8833 IR thermal imaging camera - 8x8 pixels AMG8833 IR thermal imaging camera - 8x8 pixels
Content 1 Piece
€25.90 * €29.10 *
Item no: F23105738
Add
Sold out
BFD-1000 module for line tracking, 5-channel, infrared detection BFD-1000 module for line tracking, 5-channel,...
Content 1 Piece
€3.97 *
Item no: F23107838
Add
Speed sensor Light barrier IR 3.3V / 5V Speed sensor Light barrier IR 3.3V / 5V
Content 1 Piece
€1.66 *
Item no: F23108322
Add
XL6009 LM2596 DC-DC Stepup converter Buck-Boost converter for solar etc XL6009 LM2596 DC-DC Stepup converter Buck-Boost...
Content 1 Piece
€7.37 *
Item no: F23108288
Add
TP4056 Lithium battery charging module / charge controller 1A, Micro-USB TP4056 Lithium battery charging module / charge...
Content 1 Piece
€1.20 *
Item no: F23108313
Add
TP4056 5V 1A 18650 lithium battery charge controller, micro USB TP4056 5V 1A 18650 lithium battery charge...
Content 1 Piece
€1.34 *
Item no: F23105946
Add
5V Step Up Charge Controller for Lithium Battery - 134N3P Chip, 1200 mA, Micro USB & USB-A 5V Step Up Charge Controller for Lithium...
Content 1 Piece
€1.41 *
Item no: F23105932
Add
BMS 3S 12V 10A 18650 lithium battery charging module BMS 3S 12V 10A 18650 lithium battery charging...
Content 1 Piece
€2.94 *
Item no: F23105992
Add
Laser 650nm < 5mW - line / dot / cross, 3V / 5V Laser 650nm < 5mW - line / dot / cross, 3V / 5V
Content 1 Piece
from €2.16 *
Item no: F23108330
Add
Still 3 in stock!
USB voltmeter ammeter multimeter power indicator USB voltmeter ammeter multimeter power indicator
Content 1 Piece
€11.70 *
Item no: F23109097
Add
- 15%
Kitchen Scale Digital, 1KG, household scale, LCD display, accuracy 0.1g Kitchen Scale Digital, 1KG, household scale,...
Content 1 Piece
€4.99 * €5.90 *
Item no: F23107458
Add
Creality CR-Silk (glossy PLA) filament - various colors Creality CR-Silk (glossy PLA) filament -...
Content 1 Piece
€24.10 *
Item no: F23107113
Add
Vacuum gripper FFQ 939 - with 3 attachments Vacuum gripper FFQ 939 - with 3 attachments
Content 1 Piece
€2.50 *
Item no: F23107401
Add
- 14%
2N7000 - Unipolar transistor, MOSFET, 60V, 0.115A 2N7000 - Unipolar transistor, MOSFET, 60V, 0.115A
Content 1 Piece
€0.42 * €0.49 *
Item no: F23105912
Add
Funduino ESP32 - WROOM32, WLAN, WiFi development board with CP2102 Funduino ESP32 - WROOM32, WLAN, WiFi...
Content 1 Piece
€9.07 *
Item no: F23107345
Add
ESP32 microcontroller - in UNO R3 design, ESPDUINO ESP32 microcontroller - in UNO R3 design, ESPDUINO
Content 1 Piece
€9.90 *
Item no: F23107400
Add
AS3935 - Lightning sensor for detecting thunderstorm fronts AS3935 - Lightning sensor for detecting...
Content 1 Piece
€49.23 *
Item no: F23108823
Add
Heltec LoRa 32 V2 863-928 MHz / ESP32 / OLED Heltec LoRa 32 V2 863-928 MHz / ESP32 / OLED
Content 1 Piece
€32.90 *
Item no: F23108682
Add
- 27%
VL6180X - "Time of Flight" Laser - Distance Sensor / Gesture Sensor VL6180X - "Time of Flight" Laser - Distance...
Content 1 Piece
€4.33 * €5.90 *
Item no: F23108551
Add
Universal power supply, multifunctional power supply - 3-12V, 30W, 6 attachments Universal power supply, multifunctional power...
Content 1 Piece
€9.07 *
Item no: F23107332
Add
ADNS-3080 APM2.52 APM2.6 Optical flow sensor V1.0 ADNS-3080 APM2.52 APM2.6 Optical flow sensor V1.0
Content 1 Piece
€23.12 *
Item no: F23107006
Add
Relay card, solid state relay - 4 channel, 5V Relay card, solid state relay - 4 channel, 5V
Content 1 Piece
€7.53 *
Item no: F23106987
Add
MAX30102 Heart Pulse Sensor and SpO2 (Blood Oxygen) Sensor Module MAX30102 Heart Pulse Sensor and SpO2 (Blood...
Content 1 Piece
€3.67 *
Item no: F23106948
Add
Last viewed
-10% DISCOUNT ♥