---
product_id: 116132624
title: "KT-G3-A USA 4G GSM AUTO Relay Switch 12V Solenoid Remote Control Box Wireless Gate Opener 2CH Output HOG Trap Aircraft Pre-Heater System 30A Relay Contact(for AT&T and T-Mobile Volte 2022 New)"
brand: "kiaotime"
price: "$453"
currency: NZD
in_stock: false
category: "Kiao Time"
url: https://www.desertcart.nz/products/116132624-kt-g3-a-usa-4g-gsm-auto-relay-switch-12v
store_origin: NZ
region: New Zealand
---

# Phone call & SMS remote control 4G LTE multi-band USA compatible 30A high-power relay contact KT-G3-A USA 4G GSM AUTO Relay Switch 12V Solenoid Remote Control Box Wireless Gate Opener 2CH Output HOG Trap Aircraft Pre-Heater System 30A Relay Contact(for AT&T and T-Mobile Volte 2022 New)

**Brand:** kiaotime
**Price:** $453
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Unlock limitless remote control power—anytime, anywhere in the USA!

## Quick Answers

- **What is this?** KT-G3-A USA 4G GSM AUTO Relay Switch 12V Solenoid Remote Control Box Wireless Gate Opener 2CH Output HOG Trap Aircraft Pre-Heater System 30A Relay Contact(for AT&T and T-Mobile Volte 2022 New) by kiaotime
- **How much does it cost?** $453 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/116132624-kt-g3-a-usa-4g-gsm-auto-relay-switch-12v)

## Best For

- kiaotime enthusiasts

## Why This Product

- Trusted kiaotime brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Instant SMS Feedback:** Receive real-time SMS confirmations ensuring your commands were executed flawlessly—no guesswork needed.
- • **Unmatched 4G Connectivity:** Seamlessly works with AT&T & T-Mobile 4G/3G networks for truly global remote control within the USA.
- • **Powerhouse Relay Performance:** Dual 30A relay switches handle heavy-duty devices like gates, hog traps, and aircraft heaters with ease.
- • **Zero-Minute Remote Activation:** Activate switches via phone call without using minutes—smart caller ID recognition triggers commands instantly.
- • **Flexible Multi-Platform Programming:** Control and configure via Android app, SMS, Windows PC, or optional WiFi hotspot for ultimate convenience.

## Overview

The KT-G3-A is a cutting-edge 4G GSM relay switch designed for USA networks (AT&T & T-Mobile), featuring dual 30A high-current relays for controlling gates, hog traps, aircraft heaters, and more. It offers phone call and SMS-based remote activation without using call minutes, plus instant SMS feedback for command confirmation. Programmable via Android app, SMS, PC software, or optional WiFi, this 12V device ensures reliable, unlimited-range wireless control for professional and industrial applications.

## Description

KT-G3 Upgrade Features on the basis of KT-G21> Upgrade to 30A high power relay contact2> Use big relay connection screws for easy wiring3> WiFi and RF433Mhz features are optional to save relay working powerDescription4G Relay Switch works on the basis of 4G/3G network, so it requires a prepaid pay-as-you-go 4G SIM card from your cellular provider, No minutes are used as it doesn't actually answer the calls - it recognize caller ID and then reject your phone call to turn on the switch automatically.Its working way as same as your home wall mount manual press lights switch, the only difference is we changed manual press working way to Cell Phone wireless remote control. So the range of this relay switch is truly unlimited, You can remote control your home appliances anytime anywhere in the world!Applications:HOG TRAP systemAircraft engine heaterHome or office lighting controlGSM gate openerSpecification:Working Voltage: DC 12-24V@1-2AMaterial: ABSOutput: 2 channel relay, NO/NC,COMRelay Contact: 30A 250VAC/30VDCPower Consumption: Standby status:60mA@12V, Working status:100mA@12VMemory: Relay memory after AC power outageControl way: Phone Call/SMS/Timer control/Ralated working Working Humidity: >65%Working Temperature: -25 - +55℃WiFi LAN hotspot access: OptionalRadio Frequency: 433.92MHZ (for wireless keyfob,optional)Relay device dimension:7"(L) x 4.75"(W) x 2.25"(H)Package Dimension:8.75"(L) x 6.5"(W) x 2.75"(H)4G Module Bands: FDD-LTE:B2/ B4/ B12, 3G-WCDMA:B2/B4/B5 Compatible providers: USA: AT&T, T-MobileIn the Box:1 x 2CH 4G GSM Relay Switch1 x USB to micro-USB cable1 x Internal antenna1 x External high gain antenna1 x 12V 1ADC power adapter1 x U-disk manual and software

## Features

- USA MULTI-BANDS 4G MODULE enable relay switch device can work with AT&T, T-Mobile 4G and 3G network, NOT work in other countries
- 2 CHANNEL RELAY SWICHES with 30A HIGH RELAY CONTACT enable you to control feral hog trap system, auto gate, aircraft engine heater and lights etc. anytime anywhere in the world
- FREE CHARGE PHONE CALL No.1 relay can be remote controlled by phone call, no minutes are used as it doesn't actually answer the calls - it recognize caller ID and then reject your phone call to turn on/off the switch automatically
- SMS FEEDBACK CONFIRMATION relay device will send you sms feedback after phone call or sms remote control, so you will know that relay switch received your command and act correctly
- MULTI PROGRAMMING WAY Android APP software,SMS text programming way,Windows PC software via USB,WiFi LAN hotspot access on PC(WiFi module optional)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07Q7PKW5Z |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #219,074 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #954 in Garage Door Keypads & Remotes |
| Brand | KiaoTime |
| Coil Resistance | 30 |
| Coil Voltage | 12 Volts |
| Color | KT-G3-A(AT&T,T-Mobile) |
| Connector Type | Screw |
| Contact Current Rating | 30 Amps |
| Contact Material | Silver |
| Contact Type | 2no 2nc |
| Current Rating | 30 Amps |
| Date First Available | March 30, 2019 |
| Finish | White |
| Included Components | power adapter,U-disk,external antenna |
| Installation Method | Wall-Mounted |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1.33 pounds |
| Manufacturer | KiaoTime |
| Material | ABS |
| Maximum Switching Current | 30 Amps |
| Maximum Switching Voltage | 24 Volts |
| Measurement System | Imperial |
| Minimum Switching Voltage | 12 Volts (DC) |
| Mounting Type | Surface Mount |
| Operation Mode | Automatic |
| Part Number | KT-G3 |
| Power Source | DC |
| Product Dimensions | 7 x 4.75 x 2.25 inches |
| Switch Style | Toggle |
| Thickness | 2.25 Inches |
| UPC | 603149819177 |
| Voltage | 12 Volts |

## Product Details

- **Connector Type:** Screw
- **Contact Material:** Silver
- **Contact Type:** 2no 2nc
- **Current Rating:** 30 Amps
- **Mounting Type:** Surface Mount

## Images

![KT-G3-A USA 4G GSM AUTO Relay Switch 12V Solenoid Remote Control Box Wireless Gate Opener 2CH Output HOG Trap Aircraft Pre-Heater System 30A Relay Contact(for AT&T and T-Mobile Volte 2022 New) - Image 1](https://m.media-amazon.com/images/I/41LnvFAm4BL.jpg)
![KT-G3-A USA 4G GSM AUTO Relay Switch 12V Solenoid Remote Control Box Wireless Gate Opener 2CH Output HOG Trap Aircraft Pre-Heater System 30A Relay Contact(for AT&T and T-Mobile Volte 2022 New) - Image 2](https://m.media-amazon.com/images/I/41UqSgYvNGL.jpg)
![KT-G3-A USA 4G GSM AUTO Relay Switch 12V Solenoid Remote Control Box Wireless Gate Opener 2CH Output HOG Trap Aircraft Pre-Heater System 30A Relay Contact(for AT&T and T-Mobile Volte 2022 New) - Image 3](https://m.media-amazon.com/images/I/41qhhshLkaL.jpg)
![KT-G3-A USA 4G GSM AUTO Relay Switch 12V Solenoid Remote Control Box Wireless Gate Opener 2CH Output HOG Trap Aircraft Pre-Heater System 30A Relay Contact(for AT&T and T-Mobile Volte 2022 New) - Image 4](https://m.media-amazon.com/images/I/51DdFMUu44L.jpg)
![KT-G3-A USA 4G GSM AUTO Relay Switch 12V Solenoid Remote Control Box Wireless Gate Opener 2CH Output HOG Trap Aircraft Pre-Heater System 30A Relay Contact(for AT&T and T-Mobile Volte 2022 New) - Image 5](https://m.media-amazon.com/images/I/51IDeRAPBIL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: How many different phone number can this unit store and recognize?**
A: you can add 8 numbers (3 administrators and 5 general users) on app software, but on PC software, you can add much more 42 numbers so total 50 numbers. 

AMROAD Seller · July 8, 2019

**Q: At&t is requiring an imei number to register the sim card, what am i supposed to do**
A: Ariana - Can't speak to how AT&T handles their SIM card registration ... don't have a clue.

I chose to purchase a SIM card offered by PayGo Ultra Mobile (which uses Verizon's network). I placed the SIM card into a smartphone to get the SIM card registered with PayGo and a phone number established. After a phone number was assigned to the SIM card, the SiM card was instilled in the remote switch. Not positive, but I beleave I could have registered the SIM card and received a phone number by just calling the 800 number for PayGo's customer service department and providing them with the SIM card's serial number.

**Q: When will these be available again**
A: Check with Amazon

**Q: Will this work now that at&t has done away with 3g?**
A: yes, it works on ATT 4G VoLTE network from May 2011, NEW stock items.

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-09*