What is the maximum working distance?

There is no distance limit. You can open the gate from anywhere, even another city, as long as you have mobile signal and the authorized number is calling.

What is required to operate the device?

You need a valid SIM card, AC power (or DC 12V depending on model), and a mobile phone to call or send SMS for programming.

GSM Remote Controller for Automatic Door, Sliding Gate or Swing Gate Opener

Name: GSM Remote Controller for Automatic Door, Sliding Gate or Swing Gate Opener
Brand: Shanghai Wafer Microelectronics Co., Ltd.
SKU: 674134025

Shanghai, ChinaShanghai Wafer Microelectronics Co., Ltd.

US$80.00

1 Set

Product profile

Application

Automatic Doors

Battery Type

Aaa Battery

Certification

FCC, CE

Model NO.

GSM-KEY-AC2000

Material

Plastic

Transmission Distance

>100m

Type

GSM Remote Control

Universal

Voltage

AC100-240V

Power Supply

AC220V

GSM Band

850/900/1800/1900MHz

Input

Double Alarm Input

Output

One Relay Output

Output Rating

10A/220V

Box Type

ABS Water Proof Plastic Box

Signal Transmission

RF Remote Control

Transport Package

Paper

Specification

Trademark

WEIFU

Origin

China

Production Capacity

8000

Key features

Long-Range Control: Open gate from any distance, even another city, using mobile phone caller ID.

High Capacity Storage: Stores up to 2000 full numbers and 500 special time-based numbers securely.

Zero Call Cost: System rejects calls without answering, so opening the gate incurs no phone charges.

Secure Data Storage: Numbers stored in device memory, not SIM, preventing theft via SIM removal.

Easy SMS Programming: Enable or delete numbers by sending simple SMS commands with a password.

Universal Compatibility: Works with any electric gate by connecting in parallel to the existing push button.

Dual Alarm Inputs: Features two alarm input channels for enhanced gate safety and monitoring.

Professional Grade: Industrial grade GSM engine with CE/FCC certification for reliable performance.

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.

Product Q&A

Q:How does the GSM-KEY system work?

It uses caller ID to recognize authorized numbers. When an authorized number calls, the system rejects the call and opens the gate without answering, so no call cost is incurred.

Q:Does it cost money to open the gate?

No, because the device rejects the call without answering. Standard operators do not charge for unanswered calls. You only pay for the active SIM card's monthly fee.

Q:How many phone numbers can be stored?

The system supports up to 2000 full numbers and an additional 500 special numbers that allow entry based on specific days and times of the week.

Q:Is it difficult to install?

Installation is simple. Connect two wires in parallel with the gate's push button, plug in AC power, insert a SIM card, and program numbers via SMS.

Q:How do I add or remove phone numbers?

Send an SMS starting with a password to the device, indicating the phone number and its position. Only the person with the password can modify the list.