What is the working principle?

It uses an electromechanical principle where manual rotation accelerates through a gearbox to drive a whistling wheel, squeezing air to produce a high-frequency alarm.

How long is the lead time for production?

The average lead time is one month during peak season and within 15 workdays during the off-season.

What payment terms are accepted?

Accepted payment terms include LC, T/T, Western Union, and Money Gram.

Hand Cranked Portable Mobile Alarm

Name: Hand Cranked Portable Mobile Alarm
Brand: Zhejiang Shuntong Electric Co., Ltd.
SKU: 2093651582

Zhejiang, ChinaZhejiang Shuntong Electric Co., Ltd.

US$65.00

1 Piece

Product profile

Customization

Available

Type

Industry Alarm

Signal Transmission

Wireless Alarm

Working Principle

Electromechanical

Transmission Mode

Wireless

Alarm Volume (within 1m)

≥110dB

Receive Frequency

433.92MHz

Sound Level

1252dB(a)@1m

Color

Black

Material

Aluminum Alloy

Function

Emergency Alert

Power Supply

220V/380V

Transport Package

Standard Export Packing

Specification

500-2

Trademark

SHUNTONG

Origin

Zhejiang, China

Production Capacity

20000PCS/Month

Key features

Power-Free Operation: Manual hand-cranked design provides effective alarm without external power supply.

High Decibel Output: Produces sharp, shocking sound up to 125dB(A)@1m with strong penetrating power.

Portable & Lightweight: Small size and light weight allow easy carrying and installation without tools.

Versatile Applications: Ideal for civil defense, prisons, mines, airports, and warehouses in critical situations.

Customizable Options: Available in Black color with Aluminum Alloy material and 125dB sound level.

Company profile

In-stock CapacityFast DeliveryLow MOQQuality Assurance

Zhejiang Shuntong Electric Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2017-08-09Nearest Port: NingboAverage Response Time: ≤3.73hTerms of Payment: LC, T/T, Western Union, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, CIP, FCA, EXW

AI-Powered supplier vetting

SummaryShuntong Electric Co., Ltd. is a manufacturing enterprise established in 2009 in Zhejiang, China, specializing in high- and low-voltage equipment. It reports OEM service for recognized brands, broad export coverage, and design customization capabilities. Quality-related strengths include written procedures, retained records, ISO9001, ISO14001, OHSAS18001, CB, SEMKO, CE, and CCC certifications. Service processes include documented complaint handling and corrective/preventive actions. Production is supported by one production line, 11–20 quality control staff, and stated lead times of within 15 working days off-season and one month during peak season. Innovation resources appear limited: one R&D engineer is identified, and no SDK is available. Quality test equipment is reported as zero, and ongoing batch quantity reconciliation is not performed. Financial information is limited to year labels without performance values, so financial credibility cannot be determined.

Supplier typeThe supplier is explicitly described as a professional manufacturing enterprise integrating development, production, sales, and service, specializing in high- and low-voltage equipment. It operates one production line and provides export-oriented manufacturing services, including exports through agents.

CertificationsThe company states that it holds ISO9001, ISO14001, OHSAS18001, CB, SEMKO, and CE certifications, and CCC is also listed as a sustainable development and product certification capability. These are explicit certification claims supporting this field.

After-Sales capabilityThe R&D engineer’s responsibilities include technical support for production and after-sales service. The supplier also reports written procedures and retained records for service assessment, corrective and preventive actions, and effective customer complaint handling.

Production capacityThe supplier operates one production line and reports annual output in a stated range, with 11–20 quality control staff and standardized finished-product inspection instructions. However, quality test equipment is reported as zero and ongoing quantity reconciliation for each batch or mass production is not performed, indicating material production-control limitations.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization. This indicates broad stated support for customer-specific product requirements.

Product Q&A

Q:How does the alarm work without electricity?

It is a manual hand-cranked device. By shaking the handle clockwise at 50-80 rev/min, the internal gears drive the whistling wheel to produce high-pressure air and sound.

Q:What is the sound level of this alarm?

The sound level can reach 125dB(A)@1m. The actual volume depends on the speed of the hand cranking.

Q:Is the color customizable?

Yes, the product description lists Black as a custom option for the color.

Q:What materials is the alarm made of?

The alarm is made of Aluminum Alloy, as listed in the custom attributes.

Q:Where can this alarm be used?

It is suitable for civil defense, detention centers, prisons, mines, airports, pastures, oil depots, warehouses, hotels, and restaurants during critical situations.