What is the working distance for opening the gate?

There are no distance limitations. You can open the gate from very far away, even from another city, using any mobile phone.

What power input does the device support?

The device supports AC/DC 12-24V power input.

GSM Key Remote Controller for Sliding Gate

Name: GSM Key Remote Controller for Sliding Gate
Brand: Shanghai Wafer Microelectronics Co., Ltd.
SKU: 647750425

Shanghai, ChinaShanghai Wafer Microelectronics Co., Ltd.

US$100.00

1 Piece

Product profile

Application

Automatic Doors

Battery Type

Aaa Battery

Certification

FCC, CE

Model NO.

GSM-KEY-DC

Material

Metal

Transmission Distance

>100m

Type

GSM SMS Control

Universal

Voltage

12V

Power Input

AC/DC12-24V

GSM Band

850/900/1800/1900MHz

Output

Double Relay Output

Input

Alarm Input

Box Material

Aluminium Box

Signal Transmission

RF Remote Control

Transport Package

Paper Carton

Specification

Trademark

WAFER

Origin

Shanghai

Production Capacity

1000 Per Month

Key features

GSM Network Control: Advanced secured system based on cellular network and Caller ID recognition.

Long Distance Access: Open gate from any distance, even another city, using a mobile phone.

High Capacity Storage: Stores up to 200 full numbers and 40 special time-based numbers.

Free Call Operation: System rejects calls without answering, ensuring no call charges for users.

Secure Data Storage: Numbers stored in device memory, not SIM, preventing unauthorized copying.

Easy SMS Programming: Enable or delete numbers via SMS with password protection.

Dual Power Options: Supports AC/DC 12-24V power input for flexible installation.

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 a call comes in, it checks the number against its memory list, rejects the call to avoid charges, and opens the gate.

Q:What is the maximum number of authorized users?

The system can store up to 200 full phone numbers and 40 special numbers that allow entrance based on specific days and times of the week.

Q:Does it cost money to open the gate?

No. The system does not answer the call, so standard operators do not charge for the call. You only need an active SIM card which may have a monthly fee.

Q:How do I add or remove authorized phone numbers?

You can send an SMS starting with a password to the GSM-KEY number, indicating the phone number to enable and its position. Only the person with the password can modify the list.

Q:Is it difficult to install the device?

Installation is simple. You connect two wires from the box in parallel with the gate's push button, connect to AC power (230V 20VA), insert a SIM card, and program numbers.