What are the LED indication meanings?

Green LED indicates power on, and Red LED indicates target detected.

What is the working current of the device?

The working current is 0.02A, and the standby current is 0.003A.

What is the standard accessory list?

Standard accessories include the main unit, user manual, AA battery 9V, and leather bag.

Compact AA 9V LED Display High Sensitivity Metal Detector for School

Name: Compact AA 9V LED Display High Sensitivity Metal Detector for School
Brand: Shenzhen Langdeli Technology Co., Ltd.
SKU: 2157635575

Guangdong, ChinaShenzhen Langdeli Technology Co., Ltd.

US$7.50

100-499 Pieces

US$6.30

500-999 Pieces

US$6.00

1,000-2,999 Pieces

US$5.70

3,000+ Pieces

Sample price:US$8.00/piece.Request sample

Product profile

Customization

Available

Material

ABS

Alarm Mode

Sound/Vibration

Model NO.

DM239A

Power Supply

AA Battery 9V 6f22

LED Indication

Green:Power on; Red:Target Detected

Standard Accessory

Main Unit, User Manual, AA Battery 9V, Leather Bag

Operating Frequency

25kHz

Transport Package

Neutral Packaging

Specification

410*85*45mm

Origin

Shenzhen, China

HS Code

9027899090

Key features

High Sensitivity Detection: Provides reliable metal detection with high accuracy and sensitivity for quick identification.

Dual Alarm Modes: Features both sound and vibration alarm modes for versatile alerting in different environments.

Portable and Lightweight: Compact design with yellow-black appearance, powered by AA batteries for easy portability.

Wide Application Scope: Suitable for airports, stations, docks, schools, museums, and other security testing locations.

OEM and Customization: Supports custom logo printing, packaging, manuals, stickers, and software language settings.

Certified Quality: Products hold CE, ROHS, PSE, MSDS, UN38.3, and ISO9001 certifications for safety and compliance.

Professional Manufacturer: Established in 2013 with strong R&D team, private designs, and appearance patents.

Flexible Delivery Options: Stock items ship in 1-3 days; customized orders take 20-25 days; bulk orders up to 30 days.

Company profile

Shenzhen Langdeli Technology Co., Ltd.

Guangdong, China

Business Type: Manufacturer/FactoryExport Year: 2013-05-17Nearest Port: shenzhenAverage Response Time: ≤11.79hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA

AI-Powered supplier vetting

SummaryLangdeli Technology Co., Ltd. is identified as a China-based manufacturer/factory specializing in testing instruments, including air-quality monitors, gas detectors, radiation monitors, and related devices. The supplier reports 10 years of manufacturing experience, its own factory and production facilities, more than 10 production lines, an ISO 9001 management-system certification, and 6–10 R&D engineers and quality-control staff. It also states that its products hold CE, RoHS, PSE, and FCC certifications and that it has invention and utility-model patents. The supplier claims customized solutions, strategic partnerships with large companies, broad institutional and enterprise usage, and sales and after-sales service capabilities. However, the provided information does not establish independent verification of these claims, detailed financial strength, or specific customer names and project outcomes.

Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory and describes itself as a professional testing-instrument manufacturer with its own factory, production workshop, and office buildings. Its stated product scope includes air-quality monitors, gas detectors, radiation monitors, and other testing instruments.

CertificationsThe supplier reports ISO 9001 certification for its management system and states that its products have passed CE, RoHS, PSE, and FCC certifications. These are explicit certification claims, although the provided slices do not include certificate numbers, validity dates, or issuing-body verification.

After-Sales capabilityThe supplier states that it has a comprehensive sales team and channel system capable of quickly responding to customer needs and providing professional pre-sales consultation and after-sales service. The evidence supports the existence of a stated service structure, but does not provide service-level metrics, response times, warranty terms, or repair arrangements.

R&D capabilityThe supplier identifies itself as a high-tech enterprise, reports a professional R&D team, emphasizes technological innovation, and claims multiple invention and utility-model patents. It also reports 6–10 years of combined R&D-engineer experience, providing explicit positive evidence of innovation resources and activity.

Production capacityThe supplier states that it operates its own factory and production workshop, has advanced production equipment, and runs more than 10 production lines. It also reports 6–10 quality-control staff, indicating established production and quality resources, although actual capacity, output, and utilization are not specified.

Customization capabilityThe supplier explicitly states that it provides customized testing-instrument solutions and maintains R&D, production, and sales capabilities for testing instruments. This supports customization capability, but the slices do not specify customization scope, engineering lead times, minimum order quantities, or examples of completed customized products.

Client casesThe supplier reports strategic partnerships with multiple large companies and says its products are used by government agencies, environmental-protection departments, health-supervision departments, food enterprises, and other fields. These statements indicate broad claimed application and customer exposure, but no customer names, order details, or independently verifiable case studies are provided.

Product Q&A

Q:What customization options are available?

We support custom logo printing, package design, manual language customization (English, German, Japanese, etc.), custom stickers (e.g., Amazon FBA labels), and software customization such as changing standard values or language display.

Q:What certificates does the product include?

The product includes CE, ROHS, MSDS, UN38.3, and ISO9001 certifications.

Q:What is the delivery time for orders?

Delivery time depends on the order quantity and stock status. Stock items ship in 1-3 days; small non-stock orders take 5-10 days; customized orders take 20-25 days; bulk orders up to 30,000 pcs take about 30 days.

Q:What other products does the factory produce?

The factory produces multi-function air quality monitors, CO2 meters, ozone detectors, NH3 detectors, weather stations, decibel meters, alcohol testers, multimeters, radon detectors, Geiger detectors, and electromagnetic detectors.

Q:What are the power supply requirements?

The device is powered by AA Battery 9V (6F22).