What is the lead time for orders?

Samples and small quantities ship in 3 days. Bulk orders take 2-4 weeks, while customized products require 3-5 weeks.

Are your products approved by CE/FCC?

Many of our products are CE and FCC approved. Please contact us for specific details regarding your required models.

How do you ship goods?

We ship via express, air, sea, railway, and truck. We recommend the best option based on your required time and cost.

433MHz Waterproof Remote Controller 4channel LED Control Kl238-4

Name: 433MHz Waterproof Remote Controller 4channel LED Control Kl238-4
Brand: Shenzhen Kelvin Electronics Co., Ltd.
SKU: 823475765

Guangdong, ChinaShenzhen Kelvin Electronics Co., Ltd.

US$1.70

20-199 Pieces

US$1.40

200-999 Pieces

US$1.20

1,000+ Pieces

Sample price:US$1.70/piece.Request sample

Product profile

Customization

Available

Application

Automatic Doors, Industrial Machinery, Special Equipment

Battery Type

12V

Model NO.

KL238

Code Type

Learning Code

Color

Black

Frequency

433MHz

Material

Plastic

Transmission Distance

>100m

Type

Button

Universal

Voltage

12V

Battery

12V

Modulation Way

Ask/Ook

Encoding Type

Fixed, Learning Code

Signal Transmission

RF Remote Control

Transport Package

Carton

Specification

55*40*14mm

Trademark

Kelvin

Origin

Guangdong, China

HS Code

8543709990

Production Capacity

100000/Month

Key features

Waterproof Design: Durable construction suitable for outdoor and harsh environments.

Long Transmission Distance: Effective range up to 150 meters depending on conditions.

Universal Compatibility: Works with automatic doors, industrial machinery, and special equipment.

Flexible Frequency Options: Available in 315MHz, 433MHz, 868MHz, or customized license-free bands.

Multiple Coding Types: Supports Fixed Code, Learning Code, and Rolling Code (HCS301/300).

Fast Sample Delivery: Samples and small quantities shipped within 3 days.

OEM/ODM Services: Full customization available from samples, designs, or minor adjustments.

CE and FCC Certified: Many products approved for international safety and compliance standards.

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: ≤9.24h

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:How long is the transmission distance?

The distance is marked on the product page. KRG series ranges from 30m-300m, and KLR series ranges from 1,000m-31,000m.

Q:Is the antenna important? Can I remove it?

Yes, the antenna is critical for transmitting/receiving radio signals. Removing it significantly shortens the distance and may cause the circuit to burn out.

Q:Can I have a different frequency?

Frequencies are government-controlled. We can produce special frequencies if they are license-free or if you already possess the necessary license.

Q:How long is the battery life?

Battery life depends on power consumption, capacity, and usage. For the KRG series, the battery lasts over 1 year with short pressing 5 times daily.

Q:What coding types are available?

We offer Learning Code (1527) and Rolling Code (HCS301/300) for ASK/OOK products, plus private coding types for FSK, LoRa, and paging systems.