Ningbo Lisound Audio Equipment Co Ltd

Automatic Voltage Regulator Network/telephone line input Type of output: 4x NEMA Network/telephone line output Visual indicator: Led status light Overload protection/surge protector Overheat/cut-off LED indication, Delay timer: 2sec-10sec-3min Voltage regulation  220V Input Voltage :  165-264V Output Voltage: 198-242V Boost : 198v Buck: 242V  

LVR-E4

Precision Enterprise Ltd

 	 Ecoboxx 50 Amp 12V/24V/36V/48V MPPT Solar Charge Controller Regulator Compatible with Lithium Sealed, Gel, Flooded Batteries &amp; Optional with WiFi/Bluetooth Module, 	 Compatible with 12V, 24V, 36V and 48V systems. Max PV power 750W /in 12V, 1500W / in 24, 2250W / in/36, 3000W / in/48V. Also compatible with various Deep Cycle battery options: Sealed, Gel, Flooded, and Lithium (12.8V LFP). 	 For protecting the lifespan of your battery, once the voltage of the battery drop below 9V, the solar controller will turn off automatically. 	 Easy to install and operate: Please always connect the battery before connect the solar panel, 	 ICT technology allows the 50A Solar Charger to communicate with the WiFi/Bluetooth module, which can pair with Ecoboxx smartphone app.  

Ecoboxx Intelligent Solar Controller SCE PWM series - 50A Solar Charger

 	 Ecoboxx Solar Charge Controller 12V, 10A Solar Panel Battery Controller 10Amp PWM Solar Regulator for Small Solar System 	 10A Solar Charge Controller 12V work; Max PV power 150W /in 12V 	 Solar Charge Controller 10 amps only suitable for lead acid batteries: OPEN, AGM, GEL and Seal, not for nickel hydride, lithium, Liions, or other batteries. 	 For protecting the lifespan of your battery, once the voltage of the battery drop below 9V, the solar controller will turn off automatically. 	 Easy to install and operate: Please always connect the battery before connect the solar panel, only suitable for small home solar system.  

Ecoboxx Solar Controller ISC PWM Series - Mini ISC 10

 	 Ecoboxx Solar Charge Controller 12V, 30A Solar Panel Battery Controller 30Amp PWM Solar Regulator with LCD fit for Small Solar System 	 - 30A Solar Charge Controller 12V work; Max PV power 450W /in 12V 	 - Solar Charge Controller 30 amps only suitable for lead acid batteries: OPEN, AGM, GEL and Seal, not for nickel hydride, lithium, Liions, or other batteries. 	 - For protecting the lifespan of your battery, once the voltage of the battery drop below 9V, the solar controller will turn off automatically. 	 - Easy to install and operate: Please always connect the battery before connect the solar panel, only suitable for small home solar system.  

Ecoboxx Solar Controller ISC PWM Series - Maxi ISC 30 Plus

 	 Ecoboxx Solar Charge Controller 12V, 15A Solar Panel Battery Controller 15Amp PWM Solar Regulator with LCD fit for Small Solar System 	 15A Solar Charge Controller 12V work; Max PV power 225W /in 12V 	 Solar Charge Controller 15 amps only suitable for lead acid batteries: OPEN, AGM, GEL and Seal, not for nickel hydride, lithium, Liions, or other batteries. 	 For protecting the lifespan of your battery, once the voltage of the battery drop below 9V, the solar controller will turn off automatically. 	 Easy to install and operate: Please always connect the battery before connect the solar panel, only suitable for small home solar system.  

Ecoboxx Solar Controller ISC PWM Series - Maxi ISC 15 Plus

 	 Ecoboxx Solar Charge Controller 12V, 15A Solar Panel Battery Controller 15Amp PWM Solar Regulator for Small Solar System 	 15A Solar Charge Controller 12V work; Max PV power 225W /in 12V 	 Solar Charge Controller 15 amps only suitable for lead acid batteries: OPEN, AGM, GEL and Seal, not for nickel hydride, lithium, Liions, or other batteries. 	 For protecting the lifespan of your battery, once the voltage of the battery drop below 9V, the solar controller will turn off automatically. 	 Easy to install and operate: Please always connect the battery before connect the solar panel, only suitable for small home solar system.  

Ecoboxx Solar Controller ISC PWM Series - Maxi ISC 15

 	 Ecoboxx Solar Charge Controller 12V/24V Auto, 30A Solar Panel Battery Controller 30Amp PWM Solar Regulator with LCD fit for Small Solar System 	 30A Solar Charge Controller 12V / 24V Auto work; Max PV power 450W /in 12V, 900W / in 24V 	 Solar Charge Controller 30 amps only suitable for lead acid batteries: OPEN, AGM, GEL and Seal, not for nickel hydride, lithium, Liions, or other batteries. 	 For protecting the lifespan of your battery, once the voltage of the battery drop below 9V, the solar controller will turn off automatically. 	 Easy to install and operate: Please always connect the battery before connect the solar panel, 	 Extra application: Street light, bus stops, advertisements at night time with special controller  

Ecoboxx Solar Controller ISC PWM Series - Maxi ISC 30 Deluxe

 	 Ecoboxx 30 Amp 12V/24V Solar Charge Controller Regulator Compatible with Lithium Sealed, Gel, Flooded Batteries &amp; Optional with WiFi/Bluetooth Module, 	 Compatible with 12V and 24V systems. Max PV power 450W /in 12V, 900W / in 24. Also compatible with various Deep Cycle battery options: Sealed, Gel, Flooded, and Lithium (12.8V LFP). 	 For protecting the lifespan of your battery, once the voltage of the battery drop below 9V, the solar controller will turn off automatically. 	 Easy to install and operate: Please always connect the battery before connect the solar panel, 	 ICT technology allows the 30A Solar Charger to communicate with the WiFi/Bluetooth module, which can pair with Ecoboxx smartphone app.  

Ecoboxx Intelligent Solar Controller SCE PWM series - 30A Solar Charger

 	 Ecoboxx 10 Amp 12V/24V Solar Charge Controller Regulator Compatible with Lithium Sealed, Gel, Flooded Batteries &amp; Optional with WiFi/Bluetooth Module, 	 Compatible with 12V and 24V systems. Max PV power 150W /in 12V, 300W / in 24. Also compatible with various Deep Cycle battery options: Sealed, Gel, Flooded, and Lithium (12.8V LFP). 	 For protecting the lifespan of your battery, once the voltage of the battery drop below 9V, the solar controller will turn off automatically. 	 Easy to install and operate: Please always connect the battery before connect the solar panel, 	 ICT technology allows the 10A Solar Charger to communicate with the WiFi/Bluetooth module, which can pair with Ecoboxx smartphone app.  

Ecoboxx intelligent solar controller SCE PWM series - 10A Solar Charger

 	 Ecoboxx Solar Charge Controller 12V/24V Auto, 30A Solar Panel Battery Controller 30Amp PWM Solar Regulator with LCD fit for Small Solar System 	 30A Solar Charge Controller 12V / 24V Auto work; Max PV power 450W /in 12V, 900W / in 24V 	 Solar Charge Controller 30 amps only suitable for lead acid batteries: OPEN, AGM, GEL and Seal, not for nickel hydride, lithium, Liions, or other batteries. 	 For protecting the lifespan of your battery, once the voltage of the battery drop below 9V, the solar controller will turn off automatically. 	 Easy to install and operate: Please always connect the battery before connect the solar panel, only suitable for small home solar system.  

Ecoboxx Solar Controller ISC PWM series - Maxi ISC 30 StarPlusC

 	 Ecoboxx Solar Charge Controller 12V/24V Auto, 50A Solar Panel Battery Controller 50Amp PWM Solar Regulator with LCD fit for Small Solar System 	 50A Solar Charge Controller 12V / 24V Auto work; Max PV power 800W /in 12V, 1600W / in 24V 	 Solar Charge Controller 50 amps only suitable for lead acid batteries: OPEN, AGM, GEL and Seal, not for nickel hydride, lithium, Liions, or other batteries. 	 For protecting the lifespan of your battery, once the voltage of the battery drop below 9V, the solar controller will turn off automatically. 	 Easy to install and operate: Please always connect the battery before connect the solar panel, 	 Extra application: Street light, bus stops, advertisements at night time with special controller  

Ecoboxx Solar Controller ISC PWM series - Maxi ISC 50 Deluxe

RoMaks Limited

RoMaks Limited is a trusted supplier of high-quality electronic components, strategically based in Hong Kong with a focus on fast delivery and global accessibility. We specialize in sourcing and distributing a wide range of components directly from leading manufacturers and verified distributors. Our extensive in-stock inventory and streamlined logistics network allow us to meet urgent production needs across the electronics industry. We support OEMs, EMS providers, engineers, and procurement professionals with reliable supply chains and responsive customer service. Our product portfolio covers a broad spectrum of applications in industrial automation, automotive electronics, IoT, consumer devices, power systems, and more. 🧩 Our product range includes:Passive Components: Resistors, capacitors, inductors, varistors, ferrites, and filters. Active Components: Diodes, transistors, rectifiers, thyristors, voltage regulators. Semiconductors &amp; ICs: Microcontrollers, logic ICs, analog/digital ICs, sensors, memory chips. PCB Hardware: Spacer standoffs, LED supports, screws, fasteners, connectors, cable assemblies. Optoelectronics: LEDs, displays, photodiodes, infrared components. All of our products comply with international standards such as RoHS, REACH, and ISO 9001. Quality assurance is embedded into every stage of sourcing and handling to ensure reliability, performance, and safety. 🚚 Key advantages of working with RoMaks Limited:In-stock availability for popular components with real-time updates. Fast worldwide shipping from Hong Kong to Asia, Europe, and North America. Custom sourcing solutions for hard-to-find, obsolete, or specialty parts. Flexible MOQ (Minimum Order Quantity) to support prototyping and production. Whether you are building next-generation devices or maintaining legacy systems, RoMaks Limited ensures your supply chain remains uninterrupted, affordable, and efficient. We are more than a supplier — we are a sourcing partner. For more details, visit our website or contact our team to request a product list, datasheet, or quotation. 

Electronic components

Leadwell Technology Development Limited

Master Dimmer Input Voltage : 230VAC / 50HzMin Load : 1VAMax Load : 200VABuild in Short Circuit, Over Load, Over Temperature circuitsMinimum / Maximum adjustmentsNo Neutral wire connection is requiredA trailing edge dimmer, designed for LED bulb dimmingWorks with dimmable transformersSlave Controller Input Voltage : 230VAC / 50HzConnects to Master Dimmer More than one Slave Controller can be connected to provide multi locations dimming control

Master and Slave Dimmers

Manson Engineering Ind'l Ltd

This new series of non-isolated digital DC-DC Step Down Converter with micro-processor control for fine adjustment of output voltage to optimally suit the loading condition. The 3 digit LED display shows: output voltage, current, operation mode and fault status It is further equipped with 4 special features:1. A full powered 2 Stage Charger with 14.3V Bulk &amp; 13.6V Float Charge.2. A Remote Control terminal that turns off the converter when the Ignition is switched off, preventing discharging of starter battery. This terminal can be used with other external on-off switch set up.3. A Remote Voltage Sensing at load point to ensure accurate output voltage for distant load/ battery to ensure optimal operation.4. An independent, separate and always-on output (0.5A 13.8VDC) for essential devices such as security system that requires a permanent dc source. It can also be used for the remote on off switch. Micro-Processor Control with switching mode power design.19 -36VDC Input with adjustable Output 12 to 15VDC in 0.2V step.3digit LCD display for Current, Voltage, Operation Mode and Protection Diagnosis .2 Stage full powered charger mode with 14.3V bulk and 13.6V float charge.Remote Voltage Sensing for optimal powering of distant load or charging battery.Remote control terminal auto On/ Off with ignition control and other external on/off switch.An independent always-on auxiliary output (0.5A, 13.8V) to power critical electronic device or the remote on off switch.8 fail- save protections of which 6 with diagnostic code at the LED display.Input under voltage warning has remote alarm connection.Optional accessory AVS-5025 vibration sensor to automatically control the On-Off charging operation without touching the car’s electrical system at all. This is ideal for non-technical users.Extensive ProtectionMulti-stage software based safety device with early warnings of impeding shut down faults for low input voltages. Most of the protections are self recoverable when conditions return to normal with 6 diagnostic code on the LED display. Input under voltage (self recoverable)Input over voltage (internal fuse)Output over voltage (self recoverable)Output short circuit (self recoverable)Output overload (self recoverable)Output (battery) reversed polarity (internal fuse)Over temperature (self recoverable)Fan Stuck Fault (jammed object removed -&gt; self recoverable)

SDC-5300 Series Programmable DC-DC Converter and Battery Charger

wenzhou weituo precision mould co.,ltd

The product is suitable for automatic switch control of street lamps, courtyard lamps, corridor lamp, outdoor lighting etc. The photocontrol is designed with 110-277V wide voltage application under almost power suppliers, with lighting surge protection circuit, can protect the lamps from lightning damage.             

ANSI136.10  IP66 NEMA photocontrol LED Street Light fotocontrol

China SAKO Electrical Co., Ltd.

  Here is an automatic voltage regulator under our SVC series  The regulator protects against brown outs and overvoltage  The regulator supports a wide input voltage range  This voltage regulator is portable  

AC Automatic Voltage Regulator

Apollo Power Technology Co Ltd

This is an automatic voltage regulator that is well manufactured under strict QC. It is well designed to deliver Full time surge suppression. The high and low voltage cut-off protection ensures ultimate safety.
 
  Current: 600VA, 1,000VA. 
  Automatic suppression for abnormal voltage. 
 

Automatic Voltage Regulator

Andefia Industries Ltd

This SDR automatic voltage regulator is made with a zero-cross transfer technology to guarantee high efficiency. It is fitted with two digital displays to indicate relevant results. This quality automatic voltage regulator boasts a full protection design.
 
  High-efficiency and heavy-duty toroidal transformer. 
  Zero-cross transfer technology, IC controlled circuit. 
  Well selected reliable components. 
  Full protection design. 
  Delay function integrated. 
  CE approval. 
 

SDR Automatic Voltage Regulator

Zhejiang Inovus Technology Co.,Ltd

This is an automatic voltage regulator that comes with a non-contact design. It boasts low power consumption and reliable working performance. The over-load protection ensures added safety.
 
  Quick switching. 
  No noise, no electric spark. 
 

Non-Contact Automatic Voltage Regulator

Zhejiang Jinyuan (G.S) I/E Co., Ltd

This automatic voltage regulator comes with an analog voltage display. It converts various input voltages into standard voltages for electrical appliances to operate safely. It is applicable for areas with large fluctuations of electric network voltages.
 
  Little power loss. 
  Reliable operation. 
  High stabilizing accuracy. 
 

Harbyco Electronics Technology Co., Ltd

This is an automatic voltage regulator with a highly durable housing. It features two analog displays and a jumbo button. This device is engineered to deliver reliable performance with high stability.
 
  Voltage: 140-260V AC. 
  Frequency: 50/60Hz. 
 

This automatic voltage regulator comes with a very strong housing to offer reliable protection to the internal components. It is professionally designed to deliver superior and dependable performance. The robust and rugged structure promises an extended service life.
 
  Power: 500VA. 
  Voltage: 120-260V AC. 
  Frequency: 50/60Hz. 
 

Guangdong East Power Co., Ltd.

This AVR offers protection against brownout and over-voltage. The LCD screen displays the status of input voltage, output voltage and output current. The system can provide a near constant voltage over a wide range of load conditions. This automatic voltage regulator is a great choice for stabilizing your&nbsp;AV systems.

 
  Input voltage: 140-260V AC. 
  Input frequency: 50Hz, 60Hz. 
  Output voltage: 220V AC. 
  Output accuracy: &plusmn;8%. 
  Efficiency: 98%. 
  Phase: single phase. 
  Display: LCD. 
  Protection: high-voltage protection. 
  Operating temperature: 0-40℃. 
  Storage temperature: -15℃ to 45℃. 
  Operating relative humidity: 10%RH-102%RH. 
 

This is an AC automatic voltage regulator with dual LED displays. It features a rugged and strong housing in white with excellent heat dissipation. Manufactured under strict QC, this device promises quality you can rely on.
 
  Voltage: 80V AC-140V AC-260V AC. 
  Frequency: 50/60Hz. 
 

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