What is the minimum order quantity?

The minimum order quantity is 1 piece.

Is OEM/ODM service available?

Yes, we offer both OEM and ODM services with customization options from designs or samples.

What certifications does the sensor have?

The sensor is certified with CE, FCC, and RoHS standards.

21kHz Directional Speaker Open Ultrasonic Sensor

Name: 21kHz Directional Speaker Open Ultrasonic Sensor
Brand: Shenzhen KangTong Technology Co., Ltd.
SKU: 1918576185

Guangdong, ChinaShenzhen KangTong Technology Co., Ltd.

US$0.32-0.52

50 Pieces

Sample price:US$0.52/piece.Request sample

Product profile

Customization

Available

Type

Open Ultrasonic Sensors

Output Signal Type

Analog Type

Model NO.

KT21-R1611

Production Process

Aluminum Alloy

Sensitivity

Medium

Probe Type

Angle Probe

Measuring Medium

Gas

Detection mode

Ultrasonic

IP Rating

None

Certification

CE/FCC/RoHS

Customized

Function

Receive

Center Frequency (kHz)

21positive or Negative1

Sensitivity(Db)

Greater Than or Equal to-68

Capacitance(PF)

2400positive or Negative25%

Beam Angle-6 Db Directivity X

60positive or Negative5

Beam Angle-6 Db Directivity Y

60positive or Negative5

Maximum Input Voltage (Vp -P)

100V

Housing Material/Color

Aluminum Shell Color

Dimensions(mm)

φ16mm*12mm

Weight(G)

2.3G

Working Temperature(℃)

-30~+80

Storage Temperature(℃)

-40~+85

Package

Carton

Warranty

1 Years

Installation

Easy

Transport Package

Customization

Specification

customization

Trademark

customization

Origin

China

HS Code

9018129900

Production Capacity

Max. 20K Daily

Key features

21kHz Ultrasonic Sensor: Single angle pin receiver with 21kHz center frequency for precise detection.

Aluminum Alloy Housing: Durable aluminum shell design ensuring stability and longevity in use.

CE/FCC/RoHS Certified: Complies with international safety and environmental standards.

Customization Available: Supports customized functions and designs for specific application needs.

High Sensitivity: Sensitivity greater than or equal to -68dB for accurate signal reception.

Versatile Applications: Suitable for reversing monitoring, smart homes, robotics, and automotive industries.

1-Year Warranty: Comprehensive warranty coverage for peace of mind and quality assurance.

Company profile

Importers and ExportersYears of Export ExperiencePatents AwardedStandardized quality control

Shenzhen KangTong Technology 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: 15 Years CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤2.41h

AI-Powered supplier vetting

SummaryThe supplier is a professional sensor and electronic-products supplier with stated R&D capability, 3D software design services, and customization from designs, samples, and minor modifications. Its business scope covers R&D, sales, production, domestic trade, and import/export of sensors, electronic products, and related hardware and software. It has two production lines, inventory capability, quality assurance, standardized finished-product inspection instructions, and valid manufacturing contracts with associated subcontractors. However, it reported no new products in the past year, only two R&D engineers, no written procedures or records for supplier assessment, corrective/preventive actions, or complaint handling, and no raw-material traceability identification. It has exported for 15 years, with 41%–50% of sales from exports, but lacks overseas warehouses, showrooms, agents, branches, and offline trade-show participation. No Fortune 500 cooperation or specific financial-credit evidence was provided.

Supplier typeThe supplier explicitly identifies itself as a professional technical supplier and operates in sensor, electronic-product, computer hardware, and software R&D, production, and sales. Its radar products and solutions serve automotive and several other industries, supporting classification as a specialized sensor/electronics supplier.

After-Sales capabilityThe supplier has inventory capability and accepts multiple service-payment methods, but it reports no written procedures or records for customer complaints or corrective and preventive actions. The absence of overseas warehouses, showrooms, agents, branches, and overseas-service countries further limits demonstrated after-sales infrastructure.

R&D capabilityThe supplier has stated R&D capability, 3D software design services, and two R&D engineers, and it emphasizes technology advancement. However, it launched no new products in the past year, so the evidence does not demonstrate recent product innovation.

Production capacityThe supplier has two production lines, permitted production activities for sensors and electronic products, inventory capability, valid contracts with associated subcontractors, and uniformly followed finished-product inspection instructions. However, it does not continuously reconcile production quantities by batch and has no standard operating procedure for outsourced manufacturing, indicating process-control weaknesses despite established production capacity.

Customization capabilityThe supplier explicitly provides 3D software design services and supports minor customization, customization from designs, and customization from samples. These stated service types directly demonstrate the ability to support multiple forms of product customization.