What is the delivery time?

Delivery is within 3-5 days depending on order quantity. Peak season lead time is one month, while off-season is within 15 workdays.

Can I customize the product?

Yes, we accept OEM and ODM services, including logo printing on the shell and package, with options for full or minor customization.

4 Channel Relay Home Automation Modules Wireless Receiver Switch

Name: 4 Channel Relay Home Automation Modules Wireless Receiver Switch
Brand: Shenzhen Kelvin Electronics Co., Ltd.
SKU: 945870975

Guangdong, ChinaShenzhen Kelvin Electronics Co., Ltd.

US$3.50

20-199 Pieces

US$3.20

200-999 Pieces

US$2.80

1,000+ Pieces

Sample price:US$3.50/piece.Request sample

Product profile

Customization

Available

Type

Quad

Operation

Switch Output, Voltage Output

Model NO.

KL-K400C

Voltage

DC12V

Working Current

8mA

Receiving Sensitivity

-103dBm

Output

Switching Signal (Dry Contact)

Channel

Max Load

7A (Relay Contact)

Size

49*69*20mm

Transport Package

10× 10× 10

Specification

80*50*15mm

Trademark

KELVIN

Origin

China, Guangdong

HS Code

8536500090

Production Capacity

50000pieces / Month

Key features

4-Channel Remote Control: Supports 4 channels with NO, NC, and COM terminals for versatile switching.

Long Range Transmission: Effective RF range of 1000-5Km for reliable wireless control.

Multiple Working Modes: Configurable as Momentary, Toggle, or Latching via jumper settings.

Customizable Voltage: Standard DC 12V operation with DC 9V or 24V customization available.

OEM & ODM Service: Accepts logo printing on shell and package with flexible customization.

High Load Capacity: Relay contact supports max load of 7A for robust performance.

Wide Frequency Options: Works at 433MHz or 315MHz with -103dBm receiving sensitivity.

CE & FCC Certified: Products approved with CE and FCC certifications for safety.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export Experience

Shenzhen Kelvin Electronics Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 14 years CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤7.81h

AI-Powered supplier vetting

SummaryThe supplier is identified as a manufacturing factory in Longgang District, Shenzhen. It holds ISO 9001:2015 certification and reports documented procedures for R&D audits, supplier service capability, corrective and preventive actions, finished-product inspection, and complaint handling. R&D evidence includes two years of total engineer experience, 3D design services, SDK availability, ODM/OEM services, and new product development within the past year. Production operates across two lines, with 6–10 quality-control staff and stated annual output of 200,000 wireless controllers and 400,000 wireless remote controls. The supplier supports broad customization, exports to multiple global regions, and has 14 years of export experience. It lacks overseas warehouses, showrooms, agents, and branches. Customer evidence is limited to examples involving yacht turning and vehicle tailboard lifting, plus participation in exhibitions.

Supplier typeThe supplier is explicitly classified as a factory in the manufacturing industry, located in Longgang District, Shenzhen. This supports direct manufacturing status rather than a purely trading or service-provider profile.

CertificationsThe supplier reports holding an ISO 9001:2015 certificate. This is explicit evidence of a recognized quality-management-system certification, although no additional certifications are provided.

After-Sales capabilityR&D engineers are responsible for technical support during production and after-sales service, while the supplier reports documented complaint-handling procedures and records. This supports a defined after-sales process, though response performance or service coverage is not quantified.

R&D capabilityThe supplier reports new product development within the past year, available R&D audit documentation, 3D software design services, SDK availability, ODM services, OEM services for popular brands, and two years of total R&D engineer experience. These facts indicate active product-development capability, although the scale of the R&D organization is limited in the provided data.

Production capacityThe supplier operates two production lines, has 6–10 quality-control staff, and reports annual output of 200,000 wireless controllers and 400,000 wireless remote controls. It also uses standardized finished-product inspection instructions, quality assurance, and raw-material traceability, providing explicit evidence of organized production and quality control.

Customization capabilityThe supplier explicitly provides customization from samples, designs, full customization, minor customization, and flexible customization, supported by 3D design services and ODM/OEM capabilities. This indicates broad customization coverage across both development and manufacturing services.

Client casesThe supplier cites customer applications involving RF technology for yacht turning and vehicle tailboard lifting, and reports attending seven exhibitions in different countries and regions over the past three years, including a Shenzhen Catering Expo. These provide some application and market-engagement evidence, but the slices do not identify customer names, project outcomes, or independently verifiable case details.

Product Q&A

Q:What is the warranty period?

We provide a 1-year warranty for all products unless otherwise mentioned. For DOA items, please inform us within 3 days of arrival with original packaging for replacement or refund.

Q:How can I get technical support?

Contact us via email, TradeManager, Skype, or other IM tools. Our experienced R&D staff is available to answer your questions even when we are offline.

Q:What certifications do you have?

Most products are CE certified, and some are FCC certified. We can also assist with other certification requirements if needed.

Q:What is the minimum order quantity?

The minimum order is 100 pcs, but we accept trial orders.

Q:What are the payment terms?

We accept T/T, PayPal, Western Union, and Escrow. For OEM orders, terms are 30% deposit and 70% balance before shipment.