What are the available signal modes?

The siren can produce a steady single-tone signal and a wailing single-tone signal simultaneously.

Can the motor specifications be customized?

Yes, the motor is made according to customer's requirements.

What customization services are available?

We offer OEM and ODM services, including customization from designs and samples.

What is the minimum order quantity?

The minimum order quantity is 10 pieces.

What are the lead times for production?

Peak season lead time is one month, while off-season lead time is within 15 workdays.

What payment terms do you accept?

We accept LC, T/T, D/P, PayPal, and Western Union.

Is the product suitable for outdoor use?

Yes, the LK-STH21-2 is designed specifically for outdoor warning alarm applications.

Lk-Sth21-2 380V 50Hz 3 Phase Outdoor Warning Alarm

Yueqing Winston Electric Co., Ltd.

16 yrs

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Product Highlights

Distinctive Signal Modes: Generates steady single-tone and wailing single-tone signals simultaneously.
OEM and ODM Services: Offers customization from designs and samples for tailored solutions.
CE Certification: Meets CE safety and quality standards for international markets.
Omni-directional Design: Single-tone siren design ensures sound projection in all directions.
Flexible Power Options: Motor specifications made according to customer's requirements.
Civil Defense Application: Ideal for Alert and Attack signals in civil defense scenarios.
Efficient Motor Assembly: Vertical motor with drive shafts and rotor-stator ports for high efficiency.

Product Attributes

Customization: Available
Type: Industry Alarm
Certification: CE
Model NO.: LK-STH21-2
Application: Outdoor
Trademark: Winston
Origin: China

Lk-Sth21-2 380V 50Hz 3 Phase Outdoor Warning Alarm pictures & photos — Lk-Sth21-2 380V 50Hz 3 Phase Outdoor Warning Alarm

Lk-Sth21-2 380V 50Hz 3 Phase Outdoor Warning Alarm
Lk-Sth21-2 380V 50Hz 3 Phase Outdoor Warning Alarm
Lk-Sth21-2 380V 50Hz 3 Phase Outdoor Warning Alarm
Lk-Sth21-2 380V 50Hz 3 Phase Outdoor Warning Alarm
Lk-Sth21-2 380V 50Hz 3 Phase Outdoor Warning Alarm

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Product Description

1 GENERAL

LK-STH21-2 siren is an omnidirectional, single-tone alarm siren that is capable of producing high intensity and distinctive sound that is readily distinctive from other warning signals such as vehicle sirens over a large area. The high efficiency of LK-STH21-2 siren enables them to produce a high sound level while making moderate demands on the power source.

2 SIREN DESCIPTION

LK-STH21-2 siren consists of two major assemblies: the Motor Assembly, the Intake Tube Assembly.

The Motor Assembly consists of a vertically installed motor having a drive shaft that extends from each end. A stator and rotor are mounted on each end of the motor. The stators are attached to the motor housing and the rotors are mounted on the drive shaft concentric to the stators. Each rotor-stator combination contains a different number of ports. As the motor rotates the rotors, air is drawn through the upper and lower intake tubes and passes through the rotor and stator ports in pulses. These pulses are produced because the rotor alternately opens and closes the stator ports. The pulses of air produce sound at a frequency that is dependent on the instantaneous rotational speed of the rotor, and number of ports in each rotor and stator. Ten megaphonic horns are attached to the stators, one at each port, to project the sound to the surrounding area.

3 SIGNAL DESCRIPTION

LK-STH21-2 siren is capable of producing a steady single-tone and a wailing single-tone signal. The frequency of the tones that comprise these signals have a ratio of 5.5:5. For example, if the frequency of the higher pitched tone at a given time is 560Hz, the frequency of the lower pitched tone is 500Hz. Both tones in each of the signals are produced simultaneously, lending a very distinctive sound to the siren warning signals. The steady signal is usually used as a Civil Defense "Alert" signal and the wailing signal is usually used as a Civil Defense "Attack" signal.

Motor	380V, AC, 3 Phase, 50Hz (made according to customer's requirements)
Sound Output	145±2dB @ 1m.
Frequency	500/560 ± 20Hz
Net Weight	156 KG
Carton Size	150150135cm

Lk-Sth21-2 380V 50Hz 3 Phase Outdoor Warning Alarm

About the Supplier

This supplier has been audited by CTI. Verify the report on the official CTI website with ID "QIP-ASR2531622". Items marked "" are certified.

Company Profile

Yueqing Winston Electric Co., Ltd, established in 2010, is a rapid growing enterprise who integrate the production and marketing of Industrial electrical appliance. After seven years' effort and development, now we have become one of the leading electrical manufacturers and suppliers in China. We are always keeping very kind relationship with many strong electrical factories and Insearch institutes in China. We have been enjoying high reputation in electrical market domestically and internationally.

Our factory focus on formulating most kinds of electrical in China. Which include proximity sensor, power supply, motor soft starter, frequency inverter, relay, thermostat, heater, transformer and so on. We are capable of supplying our products in various kinds of packaging according to customers' specific requirements. Now we are producing more than 100 kinds of electrical products which are exported to about 80 countries and regions all over the world. But Winston have never stop going forward, in order to control the cost, and supply competitive price for our customers, in 2012, together with our partners, we build another factory, which producing circuit breaker, distribution box, AC contactor, etc.

Winston have an special professional registration department, who in charge of the domestic registration and oversea registration. We can help our current or potential customers to do registration work. We have a good relation with domestic famous institute who can provide us with authoritative impurity analysis and toxicological report. Quality and Service are always the top concern in Winston. We provide full set of service, including data and samples, which are available on request.

Winston's Mission is: "Focus on the industrial Electrical protection, serve the worldwide Electrical. And our tenet is: "Hold integrity, Forge Ahead, Serve the world". We are always trying our best to offer the best services and the most competitive prices with high quality goods for our customer, It's the way we win our customers and the market.

Given Chance and full space, we would show you all of our advantages and let's grow up together. I am sure we can establish long term and friendly business relationship with your esteemed company because of your trust and our excellent service.

Our advantage:

1. Quality is our culture.

2. We have our own developing and designing team, which ensure our own technological and innoative products for customers.

3. For any customers who have new idea about some products, just let us know, we can according to your idea provide a unique design of the products.

4. For any customers who send us the samples of some products, we will design and develop better ones based on the samples!

5. For every customer, we will choose the best fit material, and also innovative material for their products!

6. We can according to any customers' design to do sample of them!

7. We are manufacturer, factory, so we have the ability of mass production!

8.24*7 service, professional sales group.

Technical Support:

Most of our Winston products adopt Germany advanced technology, and the producing machine are all equipped with advance system, all our workers are experienced and skilled!

Besides, for some products material are all use imported parts.

So the quality and safety are guaranteed!

After sale service:

Our working team and sales teams can guarantee a fast and high efficiency after-sale service for our product sold to everywhere of the global.

Winston has a complete supply system for the parts, which can guarantee the company's demand of product accessories. We have stocked the common parts in the major cooperation point world widely, which can shorten the supply time largely. So if have any question, just contact us any time at your convenience!

Transportation service:

We can guarantee the fast and safe delivery to the customers' hand.

About Our Factory & Business Background

Business Type: Trading Company
Address: 3rd Floor,Liufeng Building Liushi Town, Wenzhou, Zhejiang, China
Plant Area: 300 square meters
Number of Employees: 20
Registered Capital: 100,000 RMB
Terms of Payment: LC, T/T, D/P, PayPal, Western Union
International Commercial Terms(Incoterms): FOB
Average Lead Time: Peak Season Lead Time: one month
Off Season Lead Time: within 15 workdays
Nearest Port: Ningbo Port
Minimum Order Quantity: 10 Pieces
Supply Chain Partners: 15

Our Production Capability & Technical Expertise

Main Products: Proximity Sensor, Thermostat and Heater, Switching Power Supply, Motor Soft Starter, Frequency Inverter, Transformer, Relay, Circuit Breaker, Photoelectric Sensor, AC Contactor
Customization Options: Customization from Designs, Customization from Samples
ODM Service Available: Yes
OEM Service Available: Yes
R&D Engineers: 1 people

Our Industry Experience & Global Business Record

Year of Establishment: 2010-05-05
Export Year: 14 years
Main Markets: North America, South America, Europe, Southeast Asia/ Mideast, Africa
Repeat Buyers Choice: 50%~80%
Annual Export Revenue: 2,000,000 USD
Number of Foreign Trading Staff: 9
Overseas Agent/Branch: No
New Products Launched in Last year: Yes

Our Certifications, Standards & Industry Recognition

Cooperated with Fortune 500: No

FAQ

What are the available signal modes?: The siren can produce a steady single-tone signal and a wailing single-tone signal simultaneously.
Can the motor specifications be customized?: Yes, the motor is made according to customer's requirements.
What customization services are available?: We offer OEM and ODM services, including customization from designs and samples.
What is the minimum order quantity?: The minimum order quantity is 10 pieces.
What are the lead times for production?: Peak season lead time is one month, while off-season lead time is within 15 workdays.
What payment terms do you accept?: We accept LC, T/T, D/P, PayPal, and Western Union.
Is the product suitable for outdoor use?: Yes, the LK-STH21-2 is designed specifically for outdoor warning alarm applications.