The cookie settings on this website are adjusted to allow all cookies so that you have the very best experience. If you continue without changing your cookie settings, we'll assume that you are happy to receive all cookies on our website. However, if you would like to, you can change your settings at any time using the Change cookie settings link in the Special menu. 
    
 
+44 (0)20-84520161 Contact Us
Now FREE Delivery on UK mainland orders over £30+VAT

4 way 5V relay module for Arduino

  • Details

  • Recommended

  • Send

Details

Item Number
RM4
Item Condition
New
Price
£5.50 (inc VAT £6.60)

Options

Quantity


  • 470uF 25V Radial 105 deg Capacitor

    470uF 25V Radial 105 deg Capacitor

    470uF 25V Radial Electrolytic 105C High Temperature, Low Leakage, Tol ±20%

    470H25
    £0.40
  • Miniature Relay DPDT 5VDC 2Amps

    Miniature Relay DPDT 5VDC 2Amps

    Relay Double Pole Changeover 5V 2A @ 28VDC, 500mA @ 125VAC. 36 ohms. Operating Range 3.5V to 6.5V

    RUT05
    £2.25
  • 25KHz Ultrasonic Transmitter

    25KHz Ultrasonic Transmitter

    Ultrasonic Transducer - Transmitter at 25KHz

    It sends a piercing sound omnidirectionally. Cannot be heard by normal human ears, but sends frightening sound to horses, cats, dogs, mice, rats, birds etc etc. 25KHz presents a lower frequency sound than conventional 40KHz transducers and is more effective in animal and pest control.

    MA25T
    £3.75
  • 36 Way Straight 0.1 inch Pin Header

    36 Way Straight 0.1 inch Pin Header

    Straight Pin Header Male Strip 2.54mm spacing (0.1 inch)

    Gold Plated Phosphor Bronze pins.

    1 row of 36 pins 

    P36S1
    £0.75
  • Waterproof Junction Box 100 x 100 x 50mm

    Waterproof Junction Box 100 x 100 x 50mm

    Junction Box for external (IP55) and internal use 100 x 100 x 50mm

    with snap-shut cover and 6 flexible cable 29mm entry holes. Knock out mounts on base. 4 stainless steel screws.

    WBX100
    £6.75
  • Soil Hygrometer module for Arduino

    Soil Hygrometer module for Arduino

    Soil hygrometer module with digital and analogue outputs for Arduino and other microcontroller projects

     
    This module has a seperate 2 pronged moisture detector that is inserted into the soil and then connected to the comparitor board using the supplied link wires. It can give out a digital (High/Low) signal at a certain moisture level that can be set by adjusting the potentiometer on the board. There is also an analogue output to give you a more precise reading of the moisture level in the soil.
     
    Voltage : 3.3 to 5VDC
    Comparitor PCB Size 30x16mm
    KYSH
    £2.50
  • Bright Clear Red 5mm LED 2400mcd

    Bright Clear Red 5mm LED 2400mcd

    Bright Red 5mm LED Water Clear. 2400mcd, 1.8-2.0V 20mA 

    R5K
    £0.20
  • PIR Sensor Module for Arduino

    PIR Sensor Module for Arduino

    PIR sensor module for Arduino and other microcontroller projects

     
    The HCSR501 is a PIR (Passive Infra-Red) sensor that can detect the presence of people by measuring the infrared radiation radiated by the body. It can be used in a vast and diverse number of projects, including but not limited to: automated lighting systems, burglar alarms, automated door systems, etc.

    Principle of operation
    All objects with a temperature above absolute zero (0 kelvin) emit electromagnetic radiation. The higher the temperature of the object, the smaller the wavelength of the radiation emitted. The normal human body temperature is 37°C (310.2 kelvin) and it therefore emitts infrared radiation (mostly at a wavelength of 12µm). The PIR sensor can sense when a person has walked into its field of view by measuring the difference in the infrared radiation received from the ambient environment and the human body. 
     
    Voltage : 5-20VDC
    Power Consumption: 64mA
    Logic output: 3.3V
    Range: 7 metres, (<120°)
    Lock Time: 200 miliseconds
    Operating temperature range: between -15°C and 70°C
     
    HCSR501
    £2.50
  • 2 Way 2.54mm (0.1") Pitch Header Socket

    2 Way 2.54mm (0.1") Pitch Header Socket

    2 Way Header Socket, 2.54mm Pitch

    1 row of 2 pins 2.54mm (0.1") Pitch

     

    HSW2
    £0.25

Send to Friend

: *
: *
: *
Type the characters you see in the picture:


*

5V relay module for Arduino and other microcontroller projects

 
This module has 4 x 5V changover relays with the option of using them through optocouplers. There is an LED for each relay to indicate when it has been activated.
The relay allows the low current microprocessor outputs to switch higher currents and voltages. With the optocouplers it fully isolates the live side of the relays from your microprocessor, this will require a seperate 5V supply to power the relays.
 
Trigger voltage : 5VDC
Supply Voltage : 5VDC (only needed if using optoisolators)
AC Switch ratings : 250V 10A
DC Switch ratings : 30V 10A
Size 73x52mm

Bestsellers

Recently Viewed


Trustpilot