Does it support global GSM networks?

Yes, it operates on 850/900/1800/1900MHz frequencies, compatible with most global carriers.

What happens if power is lost?

The system has relay memory, so it retains its last state after power is restored.

Seven Relay Output GSM SMS Wireless Switch

Name: Seven Relay Output GSM SMS Wireless Switch
Brand: Shanghai Wafer Microelectronics Co., Ltd.
SKU: 773727415

Shanghai, ChinaShanghai Wafer Microelectronics Co., Ltd.

US$100.00

1-49 Pieces

US$50.00

50+ Pieces

Product profile

Application

Automatic Doors, Industrial Machinery, Household Appliances

Battery Type

Aa Battery

Certification

FCC, CE

Model NO.

gsm-relay

Material

Metal

Transmission Distance

50-100m

Type

Wireless, GSM Controller

Universal

Voltage

12V

Power Supply

DC12V

Output Channel

7 Channels

Working Frequency

850/900/1800/1900MHz

Box Type

Water Proof Box

Output Rating

7*220V/10A

Signal Transmission

RF Remote Control

Transport Package

Paper Carton

Specification

Trademark

WAFER

Origin

Shanghai

Production Capacity

3000 PCS Per Month

Key features

7 Independent Relay Channels: Features 7 independent relay switches for controlling various appliances simultaneously.

Dual Control Modes: Control devices via phone calls (auto-reject) or SMS text messages for flexibility.

Wide Voltage Compatibility: Supports AC/DC 9-12V power input, suitable for diverse power environments.

IP65 Waterproof Design: Enclosed in a waterproof ABS box, ensuring durability in outdoor or harsh conditions.

Global Frequency Support: Operates on 850/900/1800/1900MHz, compatible with most global GSM networks.

Power Failure Memory: Retains relay status after power failure, ensuring consistent system operation.

Enhanced Security Features: Includes optional password protection and remote password change capabilities.

Low Standby Power: Consumes less than 10mA in standby mode, ensuring energy efficiency.

Company profile

Shanghai Wafer Microelectronics Co., Ltd.

Shanghai, China

Business Type: Manufacturer/Factory, Trading CompanyAverage Response Time: >24h

AI-Powered supplier vetting

SummaryShanghai Wafer Microelectronics Co., Ltd. is a China-based electrical and electronics supplier headquartered in Shanghai. The provided records identify it as both a trading company and manufacturer/factory, while another record classifies the company type as a trading company. Its stated product scope includes coin acceptors and selectors, vending-machine control boards and accessories, GSM management and monitoring units, automatic-door controllers, sensors, and related systems. The supplier claims advanced testing equipment, strict quality-assurance systems, sales coverage, software and electrical-system expertise, and customers or markets across multiple countries and regions. However, the evidence does not confirm certifications, financial credibility, dedicated after-sales processes, factory scale, or formal customization services.

Supplier typeThe supplier is identified as a trading company in one record and as both a trading company and manufacturer/factory in another. This indicates a mixed commercial and manufacturing profile, but the available information does not establish the relative extent of either activity.

R&D capabilityThe supplier describes multiple electronic and GSM products, including vending-machine management units, remote controllers, monitoring systems, sensor-based applications, software technology, and high-tech electrical-system design. This demonstrates a broad technology-oriented product scope, although no R&D metrics, patents, or independently verified innovation results are provided.

Production capacityThe supplier is listed as a manufacturer/factory and states that it manufactures coin acceptors, control boards, GSM units, sensors, and related electronic products. Its claimed testing equipment and product breadth support production capability, but no factory capacity, equipment list, workforce size, or production-volume evidence is available.

Client casesThe supplier states that its clients are located in Mainland China and several overseas countries and regions, including Singapore, Europe, Taiwan Area, South Korea, India, Malaysia, Australia, and South Africa. These are geographic customer claims rather than named customer cases, project references, or documented performance examples.