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4 way 5V relay module for Arduino

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

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  • 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
  • 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
  • Waterproof Junction Box 75 x 75 x 38mm

    Waterproof Junction Box 75 x 75 x 38mm

    Junction Box for external (IP55) and internal use 75 x 75 x 38mm

    with snap-shut cover and 7 flexible cable entry points. Knock out mounts on base and two mounting lugs. Case opens by inserting a small screwdriver into the edge slots. Light grey.

    WBX75
    £2.75
  • 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
  • Ultra Violet 5mm LED 30mW

    Ultra Violet 5mm LED 30mW

    Ultra-Violet Emitting 5mm LED

    A superior 5mm Ultra-Violet high power LED. 

    Water clear lens made from UV resistant and waterproof epoxy material.
     
    • UV power 35mW @ 20mA 
    • Forward Voltage 3.5V typ
    • 5mm Water Clear Ultra Violet LED
    • Vf=3.8V max. 30mA max.
    • Wavelength 395nM.Radiation Power 35mW
    • Half Angle 20 deg
     
    U5M
    £1.50
  • 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

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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

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