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      AlibabaElectrical Equipment & SuppliesIndustrial ControlsRelaysWholesale relay sensor switch

      Relay Sensor Switch

      (8603 products available)

      Ac current sensor switch 0.2-200A Optional linkage controller relay 240V Current transformer self-powered sensor switch

      Ac current sensor switch 0.2-200A Optional linkage controller relay 240V Current transformer self-powered sensor switch

      $4.80 - $6.00
      Min Order: 5 pieces
      CN
      3 yrs
      4.9
      /5
      ·
      27 reviews
      ·
      "good service"
      Contact Supplier
      GEYA GRB8-01 Twilight Switch AC110V-240V Street Light Sensor Din Rail Modular Relay 16A Automatic Switching Relay

      GEYA GRB8-01 Twilight Switch AC110V-240V Street Light Sensor Din Rail Modular Relay 16A Automatic Switching Relay

      $6.41 - $7.89
      Min Order: 50 pieces
      CN
      12 yrsverify
      4.8
      /5
      ·
      62 reviews
      ·
      "Good service"
      Contact Supplier
      Taidacent Voice Activated Alarm Sound Control Light Delay Relay Switch Sound Sensor Module 24V Sound Activated Relay Switch

      Taidacent Voice Activated Alarm Sound Control Light Delay Relay Switch Sound Sensor Module 24V Sound Activated Relay Switch

      $15.36 - $19.65
      Min Order: 2 pieces
      CN
      8 yrs
      4.9
      /5
      ·
      40 reviews
      ·
      "quick delivery"
      Contact Supplier
      AFR-1 5A 8 Pin 250V AC Liquid Water Level Control Float less Relay Sensor Switch

      AFR-1 5A 8 Pin 250V AC Liquid Water Level Control Float less Relay Sensor Switch

      $1.00 - $10.00
      Min Order: 100 pieces
      CN
      17 yrsverify
      4.6
      /5
      ·
      16 reviews
      ·
      "timely delivery"
      Contact Supplier
      4G TLE Remote Relay Controller for Heater Home Appliance Garage Door GSM Temperature Sensor Controller 30A 2 Relay Smart Switch

      4G TLE Remote Relay Controller for Heater Home Appliance Garage Door GSM Temperature Sensor Controller 30A 2 Relay Smart Switch

      Ready to Ship
      $32.90 - $37.30
      Min Order: 1 piece
      Shipping per piece: $12.23
      CN
      5 yrsverify
      4.6
      /5
      ·
      56 reviews
      ·
      "Great service"
      Contact Supplier
      3 pins reed switch / reed sensor / reed relay

      3 pins reed switch / reed sensor / reed relay

      Ready to Ship
      $1.40 - $1.50
      Min Order: 2000 pieces
      Shipping per piece: $0.02
      CN
      14 yrs
      5.0
      /5
      ·
      12 reviews
      ·
      "good service"
      Contact Supplier
      W1209 12V Digital Temp Thermostat Temperature Controller Sensor Relay Switch -50-110C

      W1209 12V Digital Temp Thermostat Temperature Controller Sensor Relay Switch -50-110C

      $0.23
      Min Order: 10 pieces
      CN
      2 yrs
      5.0
      /5
      ·
      1 reviews
      ·
      Contact Supplier
      JS14A digital timer timer relay timing relay time-delay sensor switch 220V

      JS14A digital timer timer relay timing relay time-delay sensor switch 220V

      $4.00 - $6.00
      Min Order: 5 pieces
      CN
      4 yrs
      0.0
      /5
      ·
      0 reviews
      ·
      Contact Supplier
      HCRM01 1 Single-channel Thermal Relay Control Sensor Module Temperature Switch 5V 12V 24V

      HCRM01 1 Single-channel Thermal Relay Control Sensor Module Temperature Switch 5V 12V 24V

      $2.50 - $5.00
      Min Order: 10 pieces
      CN
      10 yrs
      4.7
      /5
      ·
      13 reviews
      ·
      "efficient delivery"
      Contact Supplier
      sensor switch with smart switch to protect motor overload sensor relay

      sensor switch with smart switch to protect motor overload sensor relay

      $4.80 - $6.50
      Min Order: 5 pieces
      CN
      3 yrs
      5.0
      /5
      ·
      5 reviews
      ·
      "fast delivery"
      Contact Supplier
      5V Light Photoswitch Sensor Switch/ LDR Photoresistor Relay Module/ Light Detection Photosensitive Sensor Board

      5V Light Photoswitch Sensor Switch/ LDR Photoresistor Relay Module/ Light Detection Photosensitive Sensor Board

      $2.00 - $4.00
      Min Order: 5 pieces
      CN
      10 yrs
      4.9
      /5
      ·
      65 reviews
      ·
      "Good service"
      Contact Supplier
      Stairs round ceiling pir sensor motion body infrared induction switch Relay output Surface mounted corridor intelligent switch

      Stairs round ceiling pir sensor motion body infrared induction switch Relay output Surface mounted corridor intelligent switch

      $3.22 - $3.80
      Min Order: 1 piece
      CN
      13 yrsverify
      4.5
      /5
      ·
      8 reviews
      ·
      "Quick delivery"
      Contact Supplier
      FICLUX Input 110V 240V 12W 1A Anti-fog Relay Button Mirror Lighting Touch Sensor Dimmer Switch with Internal Power Supply

      FICLUX Input 110V 240V 12W 1A Anti-fog Relay Button Mirror Lighting Touch Sensor Dimmer Switch with Internal Power Supply

      Ready to Ship
      $2.50 - $3.08
      Min Order: 1 piece
      Shipping per piece: $9.57
      CN
      5 yrsverify
      4.8
      /5
      ·
      58 reviews
      ·
      "fast delivery"
      Contact Supplier
      Original Industrial controls E3FA-DN11 E3FA-DN12 Photoelectric switch E3FA-DN13 sensor E3FA-DN14 relay switch for OMRON

      Original Industrial controls E3FA-DN11 E3FA-DN12 Photoelectric switch E3FA-DN13 sensor E3FA-DN14 relay switch for OMRON

      $10.00 - $50.00
      Min Order: 5 pieces
      CN
      12 yrs
      4.9
      /5
      ·
      34 reviews
      ·
      "Fast service"
      Contact Supplier
      Thermal overload Relay Control Sensor Module Temperature relay Switch 12v

      Thermal overload Relay Control Sensor Module Temperature relay Switch 12v

      $1.80 - $2.00
      Min Order: 20 pieces
      CN
      11 yrs
      5.0
      /5
      ·
      2 reviews
      ·
      "good service"
      Contact Supplier
      SMG-F0201 EWELINK AC85-250V smart temperature sensor switch 1CH receiver WiFi module relay 110V automatic temperature control

      SMG-F0201 EWELINK AC85-250V smart temperature sensor switch 1CH receiver WiFi module relay 110V automatic temperature control

      Ready to Ship
      $8.00 - $11.00
      Min Order: 1 piece
      Shipping per piece: $6.20
      CN
      11 yrs
      4.8
      /5
      ·
      26 reviews
      ·
      "quick delivery"
      Contact Supplier
      Proximity switch RN-05N1 NPN proximity sensor RK-05N2 relays

      Proximity switch RN-05N1 NPN proximity sensor RK-05N2 relays

      $3.00 - $10.00
      Min Order: 2 pieces
      CN
      2 yrs
      5.0
      /5
      ·
      1 reviews
      ·
      Contact Supplier
      High Quality 5V/12V Light Control Switch XH-M131 Photoresistor Relay Module Detection Sensor IC

      High Quality 5V/12V Light Control Switch XH-M131 Photoresistor Relay Module Detection Sensor IC

      $0.38 - $0.43
      Min Order: 1 piece
      CN
      4 yrs
      5.0
      /5
      ·
      4 reviews
      ·
      "fast shipping"
      Contact Supplier
      175-185 Degree Electric Cooling Fan Thermostat Kit Temperature Sensor Temperature Switch 40 50 60 AMP Relay Kit 406 427 Engine

      175-185 Degree Electric Cooling Fan Thermostat Kit Temperature Sensor Temperature Switch 40 50 60 AMP Relay Kit 406 427 Engine

      $10.00 - $11.00
      Min Order: 20 pieces
      CN
      1 yrs
      5.0
      /5
      ·
      3 reviews
      ·
      "Fast shipping"
      Contact Supplier
      12V Digital Temp Thermostat Temperature Controller Sensor Relay Switch -50-110C W1209

      12V Digital Temp Thermostat Temperature Controller Sensor Relay Switch -50-110C W1209

      $0.70 - $1.00
      Min Order: 10 pieces
      CN
      3 yrs
      4.9
      /5
      ·
      22 reviews
      ·
      "good supplier"
      Contact Supplier
      CNTD Smart Inductive Proximity Sensor Relay Electrical Proximity Switch Cylindrical Through Beam IP67 Inductive Proximity Sensor

      CNTD Smart Inductive Proximity Sensor Relay Electrical Proximity Switch Cylindrical Through Beam IP67 Inductive Proximity Sensor

      $7.15 - $7.86
      Min Order: 100 pieces
      CN
      4 yrsverify
      5.0
      /5
      ·
      6 reviews
      ·
      "Speedy shipping"
      Contact Supplier
      Letaron Mirror Hand Wave Sensor Switch Relay Control Supported Switch

      Letaron Mirror Hand Wave Sensor Switch Relay Control Supported Switch

      $2.55 - $2.58
      Min Order: 1000 sets
      CN
      8 yrs
      0.0
      /5
      ·
      0 reviews
      ·
      Contact Supplier
      High Quality DC 5V/12V Light Control Switch XH-M131 Photoresistor Relay Module Detection Sensor

      High Quality DC 5V/12V Light Control Switch XH-M131 Photoresistor Relay Module Detection Sensor

      Ready to Ship
      $0.79 - $0.92
      Min Order: 100 pieces
      Shipping per piece: $0.36
      CN
      6 yrs
      4.9
      /5
      ·
      25 reviews
      ·
      "fast service"
      Contact Supplier
      5V Light Photoswitch Sensor Switch/ LDR Photoresistor Relay Module/ Light Detection Photosensitive Sensor Board

      5V Light Photoswitch Sensor Switch/ LDR Photoresistor Relay Module/ Light Detection Photosensitive Sensor Board

      $1.70 - $2.10
      Min Order: 1 piece
      CN
      8 yrs
      4.7
      /5
      ·
      2 reviews
      ·
      "Fast shipping"
      Contact Supplier
      HCRM01 Temperature relay Switch 12v Thermal overload Relay Control Sensor Module Miduomei

      HCRM01 Temperature relay Switch 12v Thermal overload Relay Control Sensor Module Miduomei

      $1.20 - $3.60
      Min Order: 6 pieces
      CN
      4 yrs
      4.8
      /5
      ·
      11 reviews
      ·
      "prompt service"
      Contact Supplier
      YUANKY light activated switch 5A 16A external photosensitive sensor 35mm rail 220V lighting control relay switch

      YUANKY light activated switch 5A 16A external photosensitive sensor 35mm rail 220V lighting control relay switch

      $3.00 - $10.00
      Min Order: 100 pieces
      CN
      8 yrsverify
      4.7
      /5
      ·
      3 reviews
      ·
      "good delivery"
      Contact Supplier
      Soil Moisture Sensor DC 12V Relay Control Module soil moisture sensor relay Automatic watering humidity starting switch

      Soil Moisture Sensor DC 12V Relay Control Module soil moisture sensor relay Automatic watering humidity starting switch

      $1.55 - $1.72
      Min Order: 1 piece
      CN
      3 yrs
      4.7
      /5
      ·
      60 reviews
      ·
      "fast delivery"
      Contact Supplier
      Tuya Temperature and Humidity Sensor WIFI Relay Switch 1CH Smart Life APP Output AC 110V 220V 16A Module Alexa Google Home

      Tuya Temperature and Humidity Sensor WIFI Relay Switch 1CH Smart Life APP Output AC 110V 220V 16A Module Alexa Google Home

      Ready to Ship
      $6.00 - $12.00
      Min Order: 10 pieces
      Shipping per piece: $2.31
      CN
      4 yrs
      4.8
      /5
      ·
      13 reviews
      ·
      "fast delivery"
      Contact Supplier
      12V Digital Temp Thermostat Temperature Controller Sensor Relay Switch -50-110C W1209

      12V Digital Temp Thermostat Temperature Controller Sensor Relay Switch -50-110C W1209

      $2.59 - $3.59
      Min Order: 10 pieces
      CN
      1 yrs
      0.0
      /5
      ·
      0 reviews
      ·
      Contact Supplier
      proximity switch sensor GL10-N4111 PLC relay or switch module diffuses proximity photoelectric switch sensing

      proximity switch sensor GL10-N4111 PLC relay or switch module diffuses proximity photoelectric switch sensing

      Ready to Ship
      $208.00 - $286.00
      Min Order: 5 pieces
      Shipping per piece: $5.92
      CN
      2 yrsverify
      4.8
      /5
      ·
      4 reviews
      ·
      Contact Supplier
      Factory Supplier New Brand Module 10a Liquid Level Controller Switch Ac 220v Relay Water Level Detection Sensor Module

      Factory Supplier New Brand Module 10a Liquid Level Controller Switch Ac 220v Relay Water Level Detection Sensor Module

      $2.50 - $4.50
      Min Order: 1 piece
      CN
      3 yrs
      4.8
      /5
      ·
      20 reviews
      ·
      "good service"
      Contact Supplier
      12V 5A 60W Three Keys Bathroom Vanity Makeup Smart Mirror Touch Sensor Clock Switch With External Relay

      12V 5A 60W Three Keys Bathroom Vanity Makeup Smart Mirror Touch Sensor Clock Switch With External Relay

      Ready to Ship
      $7.20 - $9.40
      Min Order: 5 pieces
      Shipping per piece: $2.19
      CN
      3 yrsverify
      4.9
      /5
      ·
      51 reviews
      ·
      "quality service"
      Contact Supplier
      HS20 The square relays built-in DC diffuse type 18*50*50 E3JK-DS30M1 photoelectric proximity sensor switch

      HS20 The square relays built-in DC diffuse type 18*50*50 E3JK-DS30M1 photoelectric proximity sensor switch

      Ready to Ship
      $6.92 - $7.69
      Min Order: 2 pieces
      Shipping per piece: $4.97
      CN
      7 yrsverify
      4.8
      /5
      ·
      30 reviews
      ·
      "fast shipping"
      Contact Supplier
      ESP8266 12V 4Channel WiFi Relay module Smart Home Phone APP Remote Control Switch

      ESP8266 12V 4Channel WiFi Relay module Smart Home Phone APP Remote Control Switch

      $5.00 - $5.50
      Min Order: 1 unit
      Type: Switch Toggle
      CN
      7 yrs
      5.0
      /5
      ·
      14 reviews
      ·
      "arrived fast"
      Contact Supplier
      Automatic relay output 10M range adjustable infrared retro reflective photoelectric proximity sensor switch

      Automatic relay output 10M range adjustable infrared retro reflective photoelectric proximity sensor switch

      $9.95 - $19.95
      Min Order: 1 piece
      CN
      7 yrs
      0.0
      /5
      ·
      0 reviews
      ·
      Contact Supplier
      10A Liquid Level Controller Switch AC 220V Water Level Detection Sensor Module Liquid Level Controller Water Detection Relay

      10A Liquid Level Controller Switch AC 220V Water Level Detection Sensor Module Liquid Level Controller Water Detection Relay

      $1.50 - $2.40
      Min Order: 1 piece
      CN
      7 yrs
      0.0
      /5
      ·
      0 reviews
      ·
      "perfect delivery"
      Contact Supplier
      High Precision W2062C Digital Dual Display Humidity Controller DC 12V 24V 0 -99%RH Hygrometer Sensor Control Switch

      High Precision W2062C Digital Dual Display Humidity Controller DC 12V 24V 0 -99%RH Hygrometer Sensor Control Switch

      Ready to Ship
      $3.20 - $3.63
      Min Order: 10 pieces
      Shipping per piece: $1.92
      CN
      6 yrs
      4.8
      /5
      ·
      178 reviews
      ·
      "great service"
      Contact Supplier
      12V 24V 6A Human Body Induction Switch Wired PIR Small Motion Sensor with Timer Relay Output for LED Light Indoor

      12V 24V 6A Human Body Induction Switch Wired PIR Small Motion Sensor with Timer Relay Output for LED Light Indoor

      $1.90 - $2.60
      Min Order: 2 pieces
      CN
      10 yrsverify
      4.9
      /5
      ·
      141 reviews
      ·
      "Excellent service"
      Contact Supplier
      433Mhz Universal Wireless Remote Control Switch DC 12V 4CH Switch with relay module RF Remote intelligent remote control switch

      433Mhz Universal Wireless Remote Control Switch DC 12V 4CH Switch with relay module RF Remote intelligent remote control switch

      Ready to Ship
      $4.50 - $5.00
      Min Order: 10 pieces
      Shipping per piece: $2.31
      CN
      8 yrs
      5.0
      /5
      ·
      6 reviews
      ·
      "fast delivery"
      Contact Supplier
      MY2NJ MY2 DPDT Mini Electromagnetic Relays Switch with photoelectric sensor AC 110V 220V DC 12V 24V 5A Power Relay 8 Pin Coil

      MY2NJ MY2 DPDT Mini Electromagnetic Relays Switch with photoelectric sensor AC 110V 220V DC 12V 24V 5A Power Relay 8 Pin Coil

      Ready to Ship
      $3.00 - $3.50
      Min Order: 2 pieces
      Shipping per piece: $8.17
      CN
      6 yrsverify
      4.8
      /5
      ·
      78 reviews
      ·
      "fast shipping"
      Contact Supplier
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      About products and suppliers

      8603 relay sensor switch products are offered for sale by suppliers on Alibaba.com, of which switches accounts for 4%, relays accounts for 4%, and proximity sensors accounts for 2%. A wide variety of relay sensor switch options are available to you, such as general purpose, auto and protective.You can also choose from low power, high power relay sensor switch,As well as from sealed, epoxy relay sensor switch, and whether relay sensor switch is electromagnetic relay, voltage relay, or standard.
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