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868MHz 5km Lora Remote Controller Wireless RF Receiver Switch on off Relay

868MHz 5km Lora Remote Controller Wireless RF Receiver Switch on off Relay

US $ 13-17 / Piece FOB
20 Pieces (MOQ)
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Main Products: RF Remote Control, RF Remote Controller, RF Transmitter and Receiver Module, Wireless Paging System, Customized Product
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Shenzhen Kelvin Electronics Co., Ltd.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2017
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433MHz Electronic Relay Switch Remote Controller for Volume Gate Door Kl099

433MHz Electronic Relay Switch Remote Controller for Volume Gate Door Kl099

US $ 1-1.4 / Piece FOB
20 Pieces (MOQ)
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Transmission Distance : >100m
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Shenzhen Kelvin Electronics Co., Ltd.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2017
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Stc-1000 Smart Digital Dual Relay Thermostat Cooling Heating Temperature Controller for Freezer Incubator

Stc-1000 Smart Digital Dual Relay Thermostat Cooling Heating Temperature Controller for Freezer Incubator

US $ 5-5.7 / Piece FOB
100 Pieces (MOQ)
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Main Products: Digital Thermometer, Temperature Controller, Digital Thermometer and Hygrometer, Electric Control Panel
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Xuzhou Sanhe Automatic Control Equipment Co., Ltd.

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2010
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RS485 Load Cell Weight Controller with Relay Output

RS485 Load Cell Weight Controller with Relay Output

US $ 115-120 / Piece FOB
1 Piece (MOQ)
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Feature : Low Temperature Resistant
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Fibos Measurement Technology (Changzhou) Co., Ltd.

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2022
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Supmeter Load Cell Indicator Simple Weighing Controller Embedded Installation Relay Weigh Controller

Supmeter Load Cell Indicator Simple Weighing Controller Embedded Installation Relay Weigh Controller

US $ 107-126 / Piece FOB
1 Piece (MOQ)
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Main Products: Weighing Indicator, Weighing Controller, Weighing Scale, Weighing Apparatus, Weighing Instrument, Weight Transmitter
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Changsha Supmeter Technological Co., Ltd.

Manufacturer/Factory

Hunan, China Since 2022
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Flexem PLC FC5-30MN-DC Controller, 18 Inputs, 12 Relay Outputs, IEC 61131-3 Programming

Flexem PLC FC5-30MN-DC Controller, 18 Inputs, 12 Relay Outputs, IEC 61131-3 Programming

US $ 153.99-219 / Piece FOB
1 Piece (MOQ)
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Certification : CE
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Shanghai Flexem Technology Co., Ltd.

Shanghai, China Since 2021
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Tc4 Economic Digital Pid Temperature Controller 220VAC 24VDC Output Relay and SSR 1 Alarm

Tc4 Economic Digital Pid Temperature Controller 220VAC 24VDC Output Relay and SSR 1 Alarm

US $ 8 / Piece FOB
100 Pieces (MOQ)
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Main Products: Solid State Relay, Temperature Controller, SCR Power Regulator, Switching Power Supply, Bridge Rectifier, Power Module, Sensor, Filter Paper
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Yueqing Kane Electric Co., Ltd.

Zhejiang, China Since 2011
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2080-LC50-48awb Ab Digital Relay Outputs I/O Unit Micro 850 Controller

2080-LC50-48awb Ab Digital Relay Outputs I/O Unit Micro 850 Controller

US $ 294.9 / Piece FOB
1 Piece (MOQ)
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Mathematical Model : Linear
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Shenzhen Kernal Intelligent Technology Co., Ltd.

Trading Company

Guangdong, China Since 2024
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HPM560 PNP/NPN Relay Two-way Control LED Intelligent Display Pressure Controller

HPM560 PNP/NPN Relay Two-way Control LED Intelligent Display Pressure Controller

US $ 80-95 / Piece FOB
2 Pieces (MOQ)
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Main Products: Pressure Sensor, Pressure Switch, Water Level Sensor, Flow Meter, Differential Pressure Sensor, Pressure Transmitter, Flow Switch, Magnetic Flow Meter, Level Transmitter, Temperature Transmitter
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Nanjing Hangjia Electronic Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2019
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Rex C700 76 * 76 Relay Solid State Relay Dual Output Multifunctional K/E/J/R/S/B/N/T/PT100/Cu50 Adjustable Signal Input Pid Temperature Controller

Rex C700 76 * 76 Relay Solid State Relay Dual Output Multifunctional K/E/J/R/S/B/N/T/PT100/Cu50 Adjustable Signal Input Pid Temperature Controller

US $ 3.99 / Piece FOB
1 Piece (MOQ)
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Display Type : LED
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Zhejiang Gangkong Electric Co., Ltd

Zhejiang, China Since 2024
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Relay NPN PNP Alarm Electronic Pressure Controller

Relay NPN PNP Alarm Electronic Pressure Controller

1 Piece (MOQ)
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Main Products: Pressure Sensor; Load Cell; Displacement Sensor; Tilt Sensor; Magnetostrictive Sensor
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Shanghai TM Sensor Co., Ltd.

Manufacturer/Factory & Trading Company

Shanghai, China Since 2016
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Remote Switching Controller with Digital Input Relay Output for Remote Device Control

Remote Switching Controller with Digital Input Relay Output for Remote Device Control

US $ 82-93 / Piece FOB
1 Piece (MOQ)
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Certification : RoHS, CE
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Shenzhen Beilai Technology Co., Ltd.

Guangdong, China Since 2023
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RF Wireless Remote Controller Switch 433MHz AC 220V Relay Motor Water Pump Door Access System for Car Power Gate 315MHz Frequency

RF Wireless Remote Controller Switch 433MHz AC 220V Relay Motor Water Pump Door Access System for Car Power Gate 315MHz Frequency

US $ 3.5-4.6 / Piece FOB
100 Pieces (MOQ)
More
Main Products: Remote Control
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Xiamen Foyum Electronic Technology Co., Ltd.

Manufacturer/Factory

Fujian, China Since 2024
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Reliable 0-60MPa Pressure Controller with Advanced Relay Output

Reliable 0-60MPa Pressure Controller with Advanced Relay Output

US $ 66.34-75.69 / Piece FOB
1 Piece (MOQ)
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Customized : Customized
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Jiangsu Aice Instrument Technology Co., Ltd.

Trading Company

Jiangsu, China Since 2023
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Advanced Solid State Relay Controller for Sustainable Lighting Solutions

Advanced Solid State Relay Controller for Sustainable Lighting Solutions

US $ 50-1,000 / Piece FOB
10 Pieces (MOQ)
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Main Products: Power Regulator, Control Cabinet
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Beijing Fuanshi Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Hebei, China Since 2025
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DIN Rail Incubator Temperature Moisture Controller with 1 Relay

DIN Rail Incubator Temperature Moisture Controller with 1 Relay

US $ 22.6-23.5 / Piece FOB
1 Piece (MOQ)
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Certification : CCC, ISO9001, CE
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Yueqing Page Electrical Co., Ltd.

Manufacturer/Factory & Trading Company

Zhejiang, China Since 2016
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Hsc-J20z Air Relay Output Humidity Controller with Sensor Humidity Sensor Switch for Humidifiers Cabinet for Humidifiers

Hsc-J20z Air Relay Output Humidity Controller with Sensor Humidity Sensor Switch for Humidifiers Cabinet for Humidifiers

US $ 6.9-7.9 / Piece FOB
1 Piece (MOQ)
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Main Products: Automatic Weather Stations, Sensors, Temperature Humidity Controlling, Ultrasonic Weather Stations, Measuring Instruments
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Sichuan Weinasa Technology Co., Ltd.

Trading Company

Sichuan, China Since 2022
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Tx4-S 48*48 Pid Temperature Controller with SSR/Relay Output Temperature Controller

Tx4-S 48*48 Pid Temperature Controller with SSR/Relay Output Temperature Controller

US $ 11.14-13 / Piece FOB
5 Pieces (MOQ)
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Display Type : LCD
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Zhejiang Weihao Electronic Co., Ltd.

Manufacturer/Factory & Trading Company

Zhejiang, China Since 2010
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Automatic pH Controller for Fish Tank and Aquarium Environmental pH Regulation with Dual Relay Outputs

Automatic pH Controller for Fish Tank and Aquarium Environmental pH Regulation with Dual Relay Outputs

US $ 100.8-125.4 / Piece FOB
50 Pieces (MOQ)
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Main Products: CO2 Controller, Par Meter
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Kunshan Ast Optoelectronics Co., Ltd

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2022
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Combustion Safety Controller Ra890g1245 220V Flame Safe Guard Relay

Combustion Safety Controller Ra890g1245 220V Flame Safe Guard Relay

US $ 1,280-1,290 / Piece FOB
1 Piece (MOQ)
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Shenzhen Dulcimer Technology Co., Ltd.

Trading Company

Guangdong, China Since 2023
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Related Videos
  • What is 868MHz 5km Lora Remote Controller Wireless RF Receiver Switch on off Relay
    What is 868MHz 5km Lora Remote Controller Wireless RF Receiver Switch on off Relay
    US $ 13-17 /Piece
    20 Pieces (MOQ)
    Contact Supplier
  • What is 433MHz Electronic Relay Switch Remote Controller for Volume Gate Door Kl099
    What is 433MHz Electronic Relay Switch Remote Controller for Volume Gate Door Kl099
    US $ 1-1.4 /Piece
    20 Pieces (MOQ)
    Contact Supplier
  • What is Stc-1000 Smart Digital Dual Relay Thermostat Cooling Heating Temperature Controller for Freezer Incubator
    What is Stc-1000 Smart Digital Dual Relay Thermostat Cooling Heating Temperature Controller for Freezer Incubator
    US $ 5-5.7 /Piece
    100 Pieces (MOQ)
    Contact Supplier
  • What is RS485 Load Cell Weight Controller with Relay Output
    What is RS485 Load Cell Weight Controller with Relay Output
    US $ 115-120 /Piece
    1 Piece (MOQ)
    Contact Supplier
High Low Alarm Relay 4 20mA Online pH ORP Controller

High Low Alarm Relay 4 20mA Online pH ORP Controller

US $ 69-85 / Piece FOB
1 Piece (MOQ)
More
Main Products: PH Meter, PH Senser
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Suzhou Delfino Environmental Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2021
Chat Now Send Inquiry
Water Pump Pressure Switch Relay Output 60mm Dial RS485 Digital Pressure Controller

Water Pump Pressure Switch Relay Output 60mm Dial RS485 Digital Pressure Controller

US $ 110-120 / Piece FOB
2 Pieces (MOQ)
More
Structure : Power Built-in Type
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Hefei Siko Instruments Co., Ltd.

Anhui, China Since 2023
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Rika Rk150-01 Crane Wind Speed Sensor Controller with Relay Meter Measurement

Rika Rk150-01 Crane Wind Speed Sensor Controller with Relay Meter Measurement

US $ 105-196 / Piece FOB
1 Piece (MOQ)
More
Main Products: Wind Sensor, Radiation Sensor, Temperature Humidity Sensor, Ph Sensor, Liquid Conductivity Sensor
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Hunan Rika Electronic Tech Co., Ltd.

Manufacturer/Factory & Trading Company

Hunan, China Since 2020
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About 4 Relay Controller FAQ

  • QWhat components are essential in an electrical control system?

    The 4 Relay Controller is a premium choice in the Electrical Control System category.In an electrical control system, essential components include power supplies, relays, circuit breakers, and controllers. These components work together to regulate and monitor electrical processes and machinery, ensuring efficiency and safety.

  • QWhy should I consider purchasing electrical control systems wholesale?

    Our 4 Relay Controller offers exceptional quality and style within the Electrical Control System category.Buying electrical control systems wholesale offers cost savings, bulk purchasing benefits, and the option for customized solutions. By purchasing in bulk, you can ensure timely availability for your projects and access premium products from trusted suppliers.

  • QHow can I identify a reliable supplier for electrical control systems from China?

    The 4 Relay Controller is a top choice in our Electrical Control System collection.To find a reliable supplier in China, conduct thorough research, check certifications and reviews, and request product specifications and samples. Partnering with a reputable supplier guarantees quality products and after-sales support for your projects.

GSM Controller, 7 Relay Output Can Be Switched on/off by SMS Commands

GSM Controller, 7 Relay Output Can Be Switched on/off by SMS Commands

US $ 50-100 / Piece FOB
1 Piece (MOQ)
More
Battery Type : Aa Battery
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Shanghai Wafer Microelectronics Co., Ltd.

Shanghai, China Since 2009
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Adjustable Relay Multiple Input LCD Intelligent Digital Display Temperature and Humidity Controller

Adjustable Relay Multiple Input LCD Intelligent Digital Display Temperature and Humidity Controller

US $ 12-13 / Piece FOB
100 Pieces (MOQ)
More
Main Products: Separable Connector, Current Transformer, Voltage Transformer, Cable Termination, Switchgear Heater, Switchgear Dehumdifier, Lightning Arrester, Dehumidifier, Temperature Controller, Insulated End Cap
Contact Supplier
Welcome (Wenzhou) Electric Co., Ltd

Zhejiang, China Since 2025
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100% New Original 254 Conn 4MB Safety Relays Controller Safety CPU Units Nxsl5700 G2r-1A-Asi-24VDC Cp1w-CIF12-V1 D4ns-Sk30 S8vk-S24024 3G3mx2-A4007-Zv1

100% New Original 254 Conn 4MB Safety Relays Controller Safety CPU Units Nxsl5700 G2r-1A-Asi-24VDC Cp1w-CIF12-V1 D4ns-Sk30 S8vk-S24024 3G3mx2-A4007-Zv1

US $ 100-1,000 / Piece FOB
1 Piece (MOQ)
More
Certification : RoHS, CCC, ISO: 9001, CE
Contact Supplier
Tianjin Geely New Material Technology Co., Ltd.

Tianjin, China Since 2022
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Omch Tc Series Oven Temperature Controller Relay Output Intelligent Digital Display Pid Control Temperature

Omch Tc Series Oven Temperature Controller Relay Output Intelligent Digital Display Pid Control Temperature

US $ 7.03-7.51 / Piece FOB
1 Piece (MOQ)
More
Main Products: Proximity Sensor
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Zhejiang Hugong Automation Technology Co., Ltd.

Manufacturer/Factory & Trading Company

Zhejiang, China Since 2018
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Analog Load Cell Weighing Controller with Relay out and Modbus RTU

Analog Load Cell Weighing Controller with Relay out and Modbus RTU

US $ 174 / Piece FOB
20 Pieces (MOQ)
More
Measure Method : Automatic
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Changzhou Weibo Weighing Equipment System Co., Ltd.

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2020
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Automatic Power Factor Controller with L&T Apfc Relay Manual

Automatic Power Factor Controller with L&T Apfc Relay Manual

US $ 10 / Piece FOB
10 Pieces (MOQ)
More
Main Products: Automatic Transfer Swtich, Power Capacitor, Air Circuit Breaker, Single Meter Socket, Online Soft Starter, Power Factor Correction Device, Energy Meter, Distribution Panel, AC Contactor, Moulded Case Circuit Breaker
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WENZHOU JUNKE ELECTRIC CO., LTD.

Zhejiang, China Since 2019
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New Digital Display H3y-2 H3y-4 Powered Delay Controller 12V 24V 220V with Base Cycle Time Relay

New Digital Display H3y-2 H3y-4 Powered Delay Controller 12V 24V 220V with Base Cycle Time Relay

US $ 3.45-3.6 / Piece FOB
20 Pieces (MOQ)
More
Usage : Computer, Workstation, Server, Mobile phone, Laptop
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Shenzhen Tianhehuijin Tech Ltd

Trading Company

Guangdong, China Since 2025
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Alco PS3 Series Pressure Switch Pressure Control Relay Controller

Alco PS3 Series Pressure Switch Pressure Control Relay Controller

US $ 278-326 / piece/pieces FOB
2 piece/pieces (MOQ)
More
Main Products: Cold room; Condensing units; Refrigeration equipment; Evaporator; Compressor
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Hangzhou Sino-Cold Sci-Tech Co., Ltd.

Trading Company

Zhejiang, China Since 2023
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Xinje Xc3-19ar-E PLC Relay Output Control Cabinet Controller

Xinje Xc3-19ar-E PLC Relay Output Control Cabinet Controller

1 Piece (MOQ)
More
Task : Program
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Beijing Zhongping Technology Co., Ltd.

Trading Company

Beijing, China Since 2025
Chat Now Send Inquiry
Sch-Neider New Modicon M241, 40io Transistor PNP Ethernet Relay PLC TM241CE40t PLC Logic Controller

Sch-Neider New Modicon M241, 40io Transistor PNP Ethernet Relay PLC TM241CE40t PLC Logic Controller

US $ 100-120 / Piece FOB
1 Piece (MOQ)
More
Main Products: Integrated Circuits, Dedicated Controllers, Multimeters, Sensors, PLC, PAC, PCBA, PCB
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Shenzhen Beineng Tech. Co., Ltd.

Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
Genuine 0mron Liquid Level Relay and Water Level Controller 61f-Ls-Cp11-NRA

Genuine 0mron Liquid Level Relay and Water Level Controller 61f-Ls-Cp11-NRA

US $ 80-100 / Piece FOB
1 Piece (MOQ)
More
Size : Miniature
Contact Supplier
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Quanzhou Ausenist Technology Co., Ltd

Jiangsu, China Since 2023
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Industrial Update Wide Range Programmable Relay Output Intelligent Electric Motor Controller

Industrial Update Wide Range Programmable Relay Output Intelligent Electric Motor Controller

US $ 90-290 / Piece FOB
1 Piece (MOQ)
More
Main Products: Multi-Functional Power Meter, Power Quality Mitigation Solution, Motor Controller & Protection, Power Monitoring System, Data Center Power Monitoring System
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Jiangsu Sfere Electric Co., Ltd.

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2023
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Sil2 Certified Gas Alarm Controller with 3 Relay Outputs

Sil2 Certified Gas Alarm Controller with 3 Relay Outputs

US $ 80-300 / Piece FOB
1 Piece (MOQ)
More
Transmission Mode : Cable
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Mantern Industrial Co., Limited

Henan, China Since 2013
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Sh-512e Waterproof Digital Temperature Controller for Cooling Applications, 10A Relay, IP68 Rated

Sh-512e Waterproof Digital Temperature Controller for Cooling Applications, 10A Relay, IP68 Rated

US $ 4.4-5 / Piece FOB
100 Pieces (MOQ)
More
Main Products: Digital Thermometer, Temperature Controller, Digital Thermometer and Hygrometer, Electric Control Panel
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Xuzhou Sanhe Automatic Control Equipment Co., Ltd.

Manufacturer/Factory & Trading Company

Jiangsu, China Since 2010
Chat Now Send Inquiry
Smart City Wireless Remote Street Lamp Supports 7 Branch Relays Control Smart Street Light Centralized Controller

Smart City Wireless Remote Street Lamp Supports 7 Branch Relays Control Smart Street Light Centralized Controller

US $ 449-500 / sets FOB
1 sets (MOQ)
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Material : Plastic
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Xiamen Nengjia New Energy Technology Co., Ltd.

Fujian, China Since 2024
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