How long is the battery life?

Battery life depends on power consumption, capacity, and usage. The KRG series battery typically lasts over 1 year with 5 short presses daily.

Does your price cover tariff? How much should I pay for customs clearance?

Our price excludes tariff and shipping. Importers are responsible for taxes, though some shipping lines include customs tax for specific regions.

What is coding type? What coding type do you have?

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

What is co-frequency interference? How to avoid?

Co-frequency interference is caused by useless signals on the same frequency. It can be weakened using frequency-hopping technology.

New Product Small Size RF Remote Control EV1527 4 Button Transmitter

Name: New Product Small Size RF Remote Control EV1527 4 Button Transmitter
Brand: Shenzhen Kelvin Electronics Co., Ltd.
SKU: 2069312125

Guangdong, ChinaShenzhen Kelvin Electronics Co., Ltd.

US$1.50

20-199 Pieces

US$1.20

200-999 Pieces

US$0.90

1,000+ Pieces

Sample price:US$1.50/piece.Request sample

Product profile

Customization

Available

Application

Universal

Certification

CE, FCC, RoHS

Model NO.

KRG087

Code Type

Learning Code

Color

Black

Frequency

433MHz

Material

Plastic

Transmission Distance

50-100m

Type

Button

Universal

Voltage

Model

Krg087

Modulation Mode

Ook

Encoding

Learning Code

Battery Model

Cr2032

Current

8mA

Characteristic

Comply to CE/FCC

Transport Package

Kelvin Standard (We Also Can Do Customized Package

Specification

10x10x5

Trademark

KELVIN

Origin

Guangdong, China

HS Code

8543709990

Production Capacity

10000PCS/Month

Key features

Universal Compatibility: Fits a wide range of devices with 433MHz frequency and learning code technology.

Comprehensive Certifications: CE, FCC, and RoHS certified for safety and compliance in global markets.

Long Transmission Range: Effective distance between 30m to 300m depending on environmental factors.

Flexible Customization: Offers full, minor, and design-based customization options for unique needs.

Durable Battery Life: CR2032 battery lasts over 1 year with normal daily usage patterns.

OEM/ODM Services: Professional manufacturer providing OEM and ODM services with 2 R&D engineers.

100% Quality Inspection: Every finished product undergoes visual and functional inspection before shipping.

Low Power Consumption: Operates with only 8mA current, ensuring energy efficiency.

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: ≤7.77h

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 distance of your remote controls?

The distance varies by series. KRG series ranges from 30m to 300m, while KLR series ranges from 1,000m to 31,000m based on our testing standards.

Q:Is the distance real? Why is it different from my using?

All distances are real based on our standards. Actual distance depends on transmission power, receiving sensitivity, and the environment including obstacles, noise, and weather.

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

Yes, the antenna is critical for signal transmission. Removing it significantly shortens distance and may cause the circuit to burn out.

Q:Is the antenna the longer the better?

No. Optimal performance occurs when the antenna is 1/4 of the wavelength (about 17cm for 433.92MHz). Other lengths require resistance adjustments.

Q:Why all your products work at 433.92MHz/315MHz/868MHz? Can I have different frequency?

These bands are license-free ISM bands controlled by governments. We can produce special frequencies if they are license-free or if you have the required license.