Shop Arduino Light Sensor with Relay Switch

Sponsored
$8.59
Hiletgo 2Pcs DC 12V 2 Channel Relay Module With Isolated Optocoupler High And Low Level H/L Level Trigger Module Triggered By DC 12V
Amazon.com
421
$8.59
Hiletgo 2Pcs DC 12V 2 Channel Relay Module With Isolated Optocoupler High And Low Level H/L Level Trigger Module Triggered By DC 12V
Amazon.com
421
$51.43
Sensor Switch Ceiling Motion Sensor, Contractor Select PIR Passive Infrared Ceiling Mount Occupancy Sensor, Extended Range, Relay Included, White
Amazon.com
1
Free shipping
$51.43
Sensor Switch Ceiling Motion Sensor, Contractor Select PIR Passive Infrared Ceiling Mount Occupancy Sensor, Extended Range, Relay Included, White
Amazon.com
1
$11.99
AEDIKO 10Pcs DC 5V Relay Module 1 Channel Relay Switch Relay Board With Optocoupler Isolation Support High Or Low Level Trigger
Amazon.com
327
$11.99
AEDIKO 10Pcs DC 5V Relay Module 1 Channel Relay Switch Relay Board With Optocoupler Isolation Support High Or Low Level Trigger
Amazon.com
327
$11.49
Hiletgo 24V 8 Channel Relay Module With OPTO-Isolated High And Low Level Trigger 8 Ways Relay Switch Module For Arduino
Amazon.com
13
$11.49
Hiletgo 24V 8 Channel Relay Module With OPTO-Isolated High And Low Level Trigger 8 Ways Relay Switch Module For Arduino
Amazon.com
13
$57.10
Notifier FRM-1 - Control Relay Module
Amazon.com
14
Free shipping
$57.10
Notifier FRM-1 - Control Relay Module
Amazon.com
14
$13.80
Nsi Industries, LLC TORK RKP221 Outdoor 120-Volt Stem Mount Photocontrol - Controls Lighting Dusk To Dawn - Compatible With Incandescent/Compact
Amazon.com
87
$13.80
Nsi Industries, LLC TORK RKP221 Outdoor 120-Volt Stem Mount Photocontrol - Controls Lighting Dusk To Dawn - Compatible With Incandescent/Compact
Amazon.com
87
$54.97
Wattstopper BZ-150 Occupancy Sensor Power Pack
Amazon.com
1
Free shipping
$54.97
Wattstopper BZ-150 Occupancy Sensor Power Pack
Amazon.com
1
$72.00
Aube Technologies RC840T-120 Electromechanical Relay With Built In Relay
Amazon.com
278
Free shipping
$72.00
Aube Technologies RC840T-120 Electromechanical Relay With Built In Relay
Amazon.com
278
$68.20
Murphy By Enovation Controls 117PH Tattletale (25700074)
Amazon.com
16
Free shipping
$68.20
Murphy By Enovation Controls 117PH Tattletale (25700074)
Amazon.com
16
$40.70
Wattstopper Watt Stopper 120/230/277V 20 Amp Power Pack BZ-50
Amazon.com
40
Free shipping
$40.70
Wattstopper Watt Stopper 120/230/277V 20 Amp Power Pack BZ-50
Amazon.com
40
$13.95
Summit Lighting Supply Adjusta Post 320 Ezee-Change Photo Cell Relay , Black
Amazon.com
1K+
Free shipping
$13.95
Summit Lighting Supply Adjusta Post 320 Ezee-Change Photo Cell Relay , Black
Amazon.com
1K+
$36.25
Iot Relay - Enclosed High-Power Power Relay For Arduino, Raspberry Pi, PIC Or Wifi, Relay Shield, Automatic
Amazon.com
1K+
Free shipping
$36.25
Iot Relay - Enclosed High-Power Power Relay For Arduino, Raspberry Pi, PIC Or Wifi, Relay Shield, Automatic
Amazon.com
1K+
$30.32
Buyers Products BL10 Buzzer Light, Red Lens, For Use With Body-Up Indicator Kits, For PTO Engagement Signaling
Amazon.com
42
$30.32
Buyers Products BL10 Buzzer Light, Red Lens, For Use With Body-Up Indicator Kits, For PTO Engagement Signaling
Amazon.com
42
$12.99
Sensky 360 Degree Ceiling Mount Occupancy Sensor, 110-240V PIR Motion Sensor Switch, High Sensitive Movement Detector Light Switch, Neutral Required
Amazon.com
370
$12.99
Sensky 360 Degree Ceiling Mount Occupancy Sensor, 110-240V PIR Motion Sensor Switch, High Sensitive Movement Detector Light Switch, Neutral Required
Amazon.com
370
$9.00
Seeed Studio 103020132 Relay Module, Arduino/Raspberry Pi | Relay Boards
Newark
$9.00
Seeed Studio 103020132 Relay Module, Arduino/Raspberry Pi | Relay Boards
Newark
$98.00
Allen-Bradley 42EF-B1MPBC-A2 Photoswitch Photoelectric Sensor, A
PLCHardware.com
$98.00
Allen-Bradley 42EF-B1MPBC-A2 Photoswitch Photoelectric Sensor, A
PLCHardware.com
$7.99
EC Buying 5Pcs 1 Channel 5V Relay Module With Optocoupler Isolation Supports High Or Low Level Trigger 1-Way 5V Red Board Expansion Board
Amazon.com
4
$7.99
EC Buying 5Pcs 1 Channel 5V Relay Module With Optocoupler Isolation Supports High Or Low Level Trigger 1-Way 5V Red Board Expansion Board
Amazon.com
4
$24.98
HELLA 931680011 Relay 12V 20/40A Spdt Res Sld, Black
Amazon.com
276
$24.98
HELLA 931680011 Relay 12V 20/40A Spdt Res Sld, Black
Amazon.com
276
$7.39
Hiletgo 12V 4 Channel Relay Module With OPTO-Isolated Support High And Low Level Trigger
Amazon.com
149
$7.39
Hiletgo 12V 4 Channel Relay Module With OPTO-Isolated Support High And Low Level Trigger
Amazon.com
149
$29.99
TWTADE/ 110-220VAC LED Auto Display Digital Counter 0-999999 6 Digits + Photoelectric Switch Sensor Distance 30cm NPN NO + Holder
Amazon.com
58
$29.99
TWTADE/ 110-220VAC LED Auto Display Digital Counter 0-999999 6 Digits + Photoelectric Switch Sensor Distance 30cm NPN NO + Holder
Amazon.com
58
$11.99
DEVMO 5PCS 5V Sensor Module Board Compatible With Ar-Duino AVR PIC KY-008 Laser Transmitter Wave Length 650 Nm
Amazon.com
11
$11.99
DEVMO 5PCS 5V Sensor Module Board Compatible With Ar-Duino AVR PIC KY-008 Laser Transmitter Wave Length 650 Nm
Amazon.com
11
$44.99
Leviton ODS10-IDW Decora 120/277-Volt Wall Switch Occupancy Sensor, White
Amazon.com
506
Free shipping
$44.99
Leviton ODS10-IDW Decora 120/277-Volt Wall Switch Occupancy Sensor, White
Amazon.com
506
$138.29
A/B Coaxial Electromechanical Relay Switch, DC To 1,000 Mhz, 5W, 12V, N
Pasternack
30-day returns (most items)
$138.29
A/B Coaxial Electromechanical Relay Switch, DC To 1,000 Mhz, 5W, 12V, N
Pasternack
30-day returns
$15.36
Kidde SM120X Interconnect Accessories Smoke Relay Module
Amazon.com
225
Free shipping
$15.36
Kidde SM120X Interconnect Accessories Smoke Relay Module
Amazon.com
225
$29.99
ENERLITES Ceiling Sensor Low Voltage Power Pack For Low Voltage Sensor And Package, Self Contained Power Supply Relay System 120277V AC To 24V DC,
Amazon.com
241
$29.99
ENERLITES Ceiling Sensor Low Voltage Power Pack For Low Voltage Sensor And Package, Self Contained Power Supply Relay System 120277V AC To 24V DC,
Amazon.com
241
$79.98
Vealite RF Wireless 0-10V Dimming Module - 120-277 VAC - Module With Wall Switch Remote
Super Bright LEDs
$79.98
Vealite RF Wireless 0-10V Dimming Module - 120-277 VAC - Module With Wall Switch Remote
Super Bright LEDs
$11.99
AEDIKO 10Pcs Relay Module DC 12V Relay Board 1 Channel With Optocoupler Isolation Support High Or Low Level
Amazon.com
335
$11.99
AEDIKO 10Pcs Relay Module DC 12V Relay Board 1 Channel With Optocoupler Isolation Support High Or Low Level
Amazon.com
335
$1,930.00
SP6T Electromechanical Relay Normally Open Switch, DC To 18 Ghz, Up To 90W, 12V, SMA
Pasternack
30-day returns (most items)
$1,930.00
SP6T Electromechanical Relay Normally Open Switch, DC To 18 Ghz, Up To 90W, 12V, SMA
Pasternack
30-day returns
$55.81
Sensor Switch Wall Mount Motion Sensor, PDT Passive Dual Technology Wall Mount Occupancy Sensor, Single Relay, White (WSX PDT WH)
Amazon.com
58
Free shipping
$55.81
Sensor Switch Wall Mount Motion Sensor, PDT Passive Dual Technology Wall Mount Occupancy Sensor, Single Relay, White (WSX PDT WH)
Amazon.com
58
$14.99
Dieserc 433Mhz Universal Wireless Remote Control Switch DC 12V 1CH RF Relay Receiver Module With 2 Transmitters, EV1527 Learning Code Remote Switch
Amazon.com
129
$14.99
Dieserc 433Mhz Universal Wireless Remote Control Switch DC 12V 1CH RF Relay Receiver Module With 2 Transmitters, EV1527 Learning Code Remote Switch
Amazon.com
129
$14.99
Woods 59411WD Outdoor Hardwired Stem And Swivel Light Control With Photocell Compatible With Most Types Of Bulbs Swivel Mount For Adjustable
Amazon.com
3K+
$14.99
Woods 59411WD Outdoor Hardwired Stem And Swivel Light Control With Photocell Compatible With Most Types Of Bulbs Swivel Mount For Adjustable
Amazon.com
3K+
$18.88
36 Volt 70 Series Continuous Duty Solenoid Relay Nickel-Plating With Resistor & Diode Kit | Fit For EZGO Electric Golf Cart, Upgrade Mount Bracket
Amazon.com
$18.88
36 Volt 70 Series Continuous Duty Solenoid Relay Nickel-Plating With Resistor & Diode Kit | Fit For EZGO Electric Golf Cart, Upgrade Mount Bracket
Amazon.com
$10.99
Nsi Industries TORK RKP201 Outdoor 120-Volt Stem Mount Photocontrol With Light Adjustment Bar - Controls Lighting Dusk To Dawn - Compatible With
Amazon.com
358
$10.99
Nsi Industries TORK RKP201 Outdoor 120-Volt Stem Mount Photocontrol With Light Adjustment Bar - Controls Lighting Dusk To Dawn - Compatible With
Amazon.com
358
$18.74
Woods 59409WD Outdoor Hardwired Post Eye Light Control And Wall Plate Metallic Finishsilver
Amazon.com
764
$18.74
Woods 59409WD Outdoor Hardwired Post Eye Light Control And Wall Plate Metallic Finishsilver
Amazon.com
764
$239.99
Generic | Io HVAC Controls | Wireless Relay | 3-Terminal | 1Amp | 24V | Automatic | DIN Rail Mount
Amazon.com
7
Free shipping
$239.99
Generic | Io HVAC Controls | Wireless Relay | 3-Terminal | 1Amp | 24V | Automatic | DIN Rail Mount
Amazon.com
7
$63.26
Leviton ODS0D-IDW Dual-Relay, Decora Passive Infrared Wall Switch Occupancy Sensor, 180 Degree, 2100 Sq. Ft. Coverage, White
Amazon.com
12
Free shipping
$63.26
Leviton ODS0D-IDW Dual-Relay, Decora Passive Infrared Wall Switch Occupancy Sensor, 180 Degree, 2100 Sq. Ft. Coverage, White
Amazon.com
12
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    Shop Arduino Light Sensor with Relay Switch

    Sponsored
    $8.59
    Hiletgo 2Pcs DC 12V 2 Channel Relay Module With Isolated Optocoupler High And Low Level H/L Level Trigger Module Triggered By DC 12V
    Amazon.com
    421
    $8.59
    Hiletgo 2Pcs DC 12V 2 Channel Relay Module With Isolated Optocoupler High And Low Level H/L Level Trigger Module Triggered By DC 12V
    Amazon.com
    421
    $51.43
    Sensor Switch Ceiling Motion Sensor, Contractor Select PIR Passive Infrared Ceiling Mount Occupancy Sensor, Extended Range, Relay Included, White
    Amazon.com
    1
    Free shipping
    $51.43
    Sensor Switch Ceiling Motion Sensor, Contractor Select PIR Passive Infrared Ceiling Mount Occupancy Sensor, Extended Range, Relay Included, White
    Amazon.com
    1
    $11.99
    AEDIKO 10Pcs DC 5V Relay Module 1 Channel Relay Switch Relay Board With Optocoupler Isolation Support High Or Low Level Trigger
    Amazon.com
    327
    $11.99
    AEDIKO 10Pcs DC 5V Relay Module 1 Channel Relay Switch Relay Board With Optocoupler Isolation Support High Or Low Level Trigger
    Amazon.com
    327
    $11.49
    Hiletgo 24V 8 Channel Relay Module With OPTO-Isolated High And Low Level Trigger 8 Ways Relay Switch Module For Arduino
    Amazon.com
    13
    $11.49
    Hiletgo 24V 8 Channel Relay Module With OPTO-Isolated High And Low Level Trigger 8 Ways Relay Switch Module For Arduino
    Amazon.com
    13
    $57.10
    Notifier FRM-1 - Control Relay Module
    Amazon.com
    14
    Free shipping
    $57.10
    Notifier FRM-1 - Control Relay Module
    Amazon.com
    14
    $13.80
    Nsi Industries, LLC TORK RKP221 Outdoor 120-Volt Stem Mount Photocontrol - Controls Lighting Dusk To Dawn - Compatible With Incandescent/Compact
    Amazon.com
    87
    $13.80
    Nsi Industries, LLC TORK RKP221 Outdoor 120-Volt Stem Mount Photocontrol - Controls Lighting Dusk To Dawn - Compatible With Incandescent/Compact
    Amazon.com
    87
    $54.97
    Wattstopper BZ-150 Occupancy Sensor Power Pack
    Amazon.com
    1
    Free shipping
    $54.97
    Wattstopper BZ-150 Occupancy Sensor Power Pack
    Amazon.com
    1
    $72.00
    Aube Technologies RC840T-120 Electromechanical Relay With Built In Relay
    Amazon.com
    278
    Free shipping
    $72.00
    Aube Technologies RC840T-120 Electromechanical Relay With Built In Relay
    Amazon.com
    278
    $68.20
    Murphy By Enovation Controls 117PH Tattletale (25700074)
    Amazon.com
    16
    Free shipping
    $68.20
    Murphy By Enovation Controls 117PH Tattletale (25700074)
    Amazon.com
    16
    $40.70
    Wattstopper Watt Stopper 120/230/277V 20 Amp Power Pack BZ-50
    Amazon.com
    40
    Free shipping
    $40.70
    Wattstopper Watt Stopper 120/230/277V 20 Amp Power Pack BZ-50
    Amazon.com
    40
    $13.95
    Summit Lighting Supply Adjusta Post 320 Ezee-Change Photo Cell Relay , Black
    Amazon.com
    1K+
    Free shipping
    $13.95
    Summit Lighting Supply Adjusta Post 320 Ezee-Change Photo Cell Relay , Black
    Amazon.com
    1K+
    $36.25
    Iot Relay - Enclosed High-Power Power Relay For Arduino, Raspberry Pi, PIC Or Wifi, Relay Shield, Automatic
    Amazon.com
    1K+
    Free shipping
    $36.25
    Iot Relay - Enclosed High-Power Power Relay For Arduino, Raspberry Pi, PIC Or Wifi, Relay Shield, Automatic
    Amazon.com
    1K+
    $30.32
    Buyers Products BL10 Buzzer Light, Red Lens, For Use With Body-Up Indicator Kits, For PTO Engagement Signaling
    Amazon.com
    42
    $30.32
    Buyers Products BL10 Buzzer Light, Red Lens, For Use With Body-Up Indicator Kits, For PTO Engagement Signaling
    Amazon.com
    42
    $12.99
    Sensky 360 Degree Ceiling Mount Occupancy Sensor, 110-240V PIR Motion Sensor Switch, High Sensitive Movement Detector Light Switch, Neutral Required
    Amazon.com
    370
    $12.99
    Sensky 360 Degree Ceiling Mount Occupancy Sensor, 110-240V PIR Motion Sensor Switch, High Sensitive Movement Detector Light Switch, Neutral Required
    Amazon.com
    370
    $9.00
    Seeed Studio 103020132 Relay Module, Arduino/Raspberry Pi | Relay Boards
    Newark
    $9.00
    Seeed Studio 103020132 Relay Module, Arduino/Raspberry Pi | Relay Boards
    Newark
    $98.00
    Allen-Bradley 42EF-B1MPBC-A2 Photoswitch Photoelectric Sensor, A
    PLCHardware.com
    $98.00
    Allen-Bradley 42EF-B1MPBC-A2 Photoswitch Photoelectric Sensor, A
    PLCHardware.com
    $7.99
    EC Buying 5Pcs 1 Channel 5V Relay Module With Optocoupler Isolation Supports High Or Low Level Trigger 1-Way 5V Red Board Expansion Board
    Amazon.com
    4
    $7.99
    EC Buying 5Pcs 1 Channel 5V Relay Module With Optocoupler Isolation Supports High Or Low Level Trigger 1-Way 5V Red Board Expansion Board
    Amazon.com
    4
    $24.98
    HELLA 931680011 Relay 12V 20/40A Spdt Res Sld, Black
    Amazon.com
    276
    $24.98
    HELLA 931680011 Relay 12V 20/40A Spdt Res Sld, Black
    Amazon.com
    276

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