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.

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.

Is the color customizable?

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

What materials is the alarm made of?

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

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

Zhejiang Shuntong Electric Co., Ltd.

10 yrs

5.0 (2 Reviews)

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Product HighlightsPower-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.

Product Attributes

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

Hand Cranked Portable Mobile Alarm pictures & photos — Hand Cranked Portable Mobile Alarm

Hand Cranked Portable Mobile Alarm
Hand Cranked Portable Mobile Alarm
Hand Cranked Portable Mobile Alarm
Hand Cranked Portable Mobile Alarm
Hand Cranked Portable Mobile Alarm
Hand Cranked Portable Mobile Alarm
Hand Cranked Portable Mobile Alarm

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Hand Cranked Portable Mobile Alarm
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Product Description

Manual alarm without power supply,but can provide an effective alarm in the place that without power supply.Simply shake the handle clockwise through artificial hand,speed arrive junior (50-80 rev / min) can achieve the desired effect alarm,the sound sharp,shocking large, penetrating power.Alarm sound depends on the handle speed of shaking.

Handcranked siren small size,light weight,easy to carry,easy to install,does not require any tools,Only need 0.15 square and where people stood can normal operation ,the mobility of the job is very strong.

It is an ideal Alarm equipment when Civil defense,detention centers,prisons,mines,airports,pastures,oil depots,warehouses, hotels,restaurants and other business units Critical situation occurs.

Product name	Hand crank alarm
Product model	LK-120
Acoustic audio	600±20Hz (depending on hand cranking speed)
Audio frequency	600 ± 20 Hz (depending on hand-crank speed)
Sound level	1252dB(A)@1m

Application areas:An ideal alarm equipment used by civil defense,detention centers, prisons, mines, airports, pastures,oil depots, warehouses, hotels, hotels and other enterprises inthe event of a critical situation.

Alarm principle:The hand-cranked siren is manually rotated bythe crank handle, accelerated step by step through thetransmission of the gear box, and then driven by the transmissionblock to drive the ringing wheel to run at high speed. During thehigh-speed operation of the whistling wheel, the absorbed airproduces high-speed and high-pressure squeezing out to the fixedwindow of the fixed wheel at the same time, thereby playing therole of alarm
Hand Cranked Portable Mobile Alarm

About the Supplier

This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASR243297". Items marked "" are certified.

Company Profile

ZHEJIANG SHUNTONG Co., founded in 1995, with more than 35000M2 manufacturing space, 650 employees, it becomes one of the leading manufacturer of industrial electric product in China. As well as one of the earliest factories in the line with nearly 20 years experience in producing and developing for electric equipment.

The Company has successfully developed and producing various categories in industrial electric products which include: Circuit Breakers, Panel Boards, AC contactors, Meters, Relays, Fuses, Control Units… As well as many other electrical accessories such as LED lighting.

Shuntong owns modern R&D center for developing electric products with full-line of high-tech moulding, manufacturing equipment and great strength of technical support, besides advanced design forces powered by first class engineering teams with super industrial computer systems. Thus, each piece of the product is fully assured with top-reliable quality, scientific and novel design as well as excellent workmanship.

SHUNTONG Electricals obtained ISO9001 quality system certification, ISO14001, OHSAS18001, CB certification; SEMKO and CE certification, etc. It is no doubt that the products are warmly welcomed not only in domestic but also in overseas market year after year.

In order to keep the leadship in electrical industry, Shuntong continuous increase and update manufacturing facilities, keep improving techniques and adopting the most advanced inspect instrument to bring our products to an even higher quality level along with impeccable & rapidly delivery service.

About Our Factory & Business Background

Address: Houjie Industry Zone, Liushi Town, Yueqing, Wenzhou, Zhejiang, China
Terms of Payment: LC, T/T, Western Union, Money Gram
International Commercial Terms(Incoterms): FOB, CFR, CIF, CIP, FCA, EXW
Average Lead Time: Peak Season Lead Time: one month
Off Season Lead Time: within 15 workdays
Nearest Port: Ningbo

Our Production Capability & Technical Expertise

Main Products: Transformers, Frequency Inverter, Inverter, Voltage Stabilizer, Fan

Our Industry Experience & Global Business Record

Export Year: 2017-08-09
Main Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe

FAQ

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.
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.
Is the color customizable?: Yes, the product description lists Black as a custom option for the color.
What materials is the alarm made of?: The alarm is made of Aluminum Alloy, as listed in the custom attributes.
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.
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.