1. Introduction
This manual provides detailed instructions for the installation, operation, and programming of your Scimagic-RC SMG-8112 Tuya Smart Garage Door Opener and Wireless Keypad. This system combines a 2-channel 433MHz rolling code receiver with a metal wireless keypad and an RF433 remote control transmitter, offering versatile control options including Wi-Fi via Tuya/Smart Life APP, voice control with Alexa and Google Home, and traditional RF remote control.
2. Safety Information
Please read all instructions carefully before installation and use. Keep this manual for future reference. Ensure all electrical connections are made by a qualified professional if you are unsure. Disconnect power before performing any wiring or maintenance.
3. Package Contents
Your package should include the following items:
- 1 x Smart Receiver (SMG-8112)
- 1 x Metal Wireless Keypad
- 1 x RF433 Remote Control Transmitter
- 1 x English User Manual
- Mounting hardware for keypad (4 screws, 4 wall anchors, 4 small plugs)
4. Specifications
4.1. Smart Receiver (SMG-8112)
| Feature | Specification |
|---|---|
| Model Number | SMG-8112 |
| Input Voltage | DC/AC 7V~32V or AC 85-250V |
| Max. Current | 2200W/10A |
| RF Frequency | 433.92MHz / 433MHz |
| Channels | 2 |
| Encoding Method | Learning code |
| APP Control | Tuya or Smart Life |
| Voice Control | Alexa & Google Home |
| Working Temperature | -20℃~70℃ |
| Use | Garage/swing/sliding gate opener |
| Dimensions | Approx. 70mm (W) x 80mm (L) x 28mm (H) |
4.2. Metal Wireless Keypad
| Feature | Specification |
|---|---|
| Power | 6 Volt DC (2 x CR2032 Li battery) |
| Battery Life | Approx. 2 years (4 operations/day) |
| Frequency | 433.92MHz +/- 75KHz |
| Transmitter Power | 1Mw |
| Data Format | Standard |
| Password Number | 0-8 digits |
| Waterproof Level | IP54 |
| Dimensions | Approx. 85mm (L) x 75mm (W) x 35mm (H) |
| Weight | 150g |
| Transmission Range | 200m (open space), 35m (indoors) |
4.3. RF Remote Control Transmitter
| Feature | Specification |
|---|---|
| Operating Frequency | 433MHz |
| Power | 12V 23A battery (not included) |
| Material | PVC |
| Buttons | 4 buttons |
| Encoding Type | Learning Code |
| Transmission Distance | 20-50m |
| Dimensions | Approx. 3.8cm (W) x 6cm (L) x 1.6cm (H) |
5. Setup and Installation
5.1. Pre-installation Checklist
Before proceeding with the installation, ensure the following:
- Your smartphone or tablet is connected to a 2.4GHz Wi-Fi network with internet access.
- Bluetooth is enabled on your phone.
- You have the correct Wi-Fi password.
- Your smartphone or tablet has access to the App Store (iOS) or Google Play (Android).
- Your router is MAC-open.
5.2. Keypad Battery Installation
The metal wireless keypad requires two CR2032 lithium batteries (included). To install:
- Locate the battery compartment on the rear of the keypad.
- Open the battery rear cover.
- Insert two CR2032 batteries, ensuring correct polarity.
- Close the battery rear cover securely.
5.3. Receiver Wiring
The receiver can operate with either DC/AC 7-32V or AC 85-250V input voltage. Connect the receiver to your garage door or gate opener control board. Typically, this involves connecting 4 wires between the receiver and the control panel.
Terminal Definitions:
- ANT: Receiver Antenna
- CH1: Relay Output 1
- CH2: Relay Output 2
- V+: Voltage +
- GND: Ground
6. Operating Instructions
6.1. App Installation and Registration
- Download the “Tuya Smart” or “Smart Life” app from your mobile app store (App Store for iOS, Google Play for Android). You can also scan the QR code below.
- Register for a new Tuya Smart account. If you already have an account, simply log in.
- Power on the receiver.
6.2. Programming RF Remote Control (Rolling Code 433.92MHz)
This video demonstrates how to program the rolling code remote control and use the Tuya app for remote control.
Momentary Working Model:
- Learning Transmitter’s Codes: Press “learn 1” or “learn 2” button on the receiver for 1 second. The “learn_led” light will illuminate. Then, press the desired button on your remote control transmitter until the “learn_led” flashes and turns off. The transmitter’s code has now been stored. Repeat these steps for any other transmitters you wish to program.
- Erasing Transmitter’s Codes: Press and hold “learn 1” or “learn 2” button on the receiver until the “learn_led” light illuminates and then goes out. All previously stored transmitter codes will be erased.
6.3. Using Tuya App Remote Control
Once the device is added to the Tuya Smart app, you can control your garage door or gate remotely.
6.4. Inching Setting
The app allows you to set an 'inching' mode, which can automatically close the door after a set time (e.g., 120 seconds) after opening.
6.5. Intelligent Timing Function
Set schedules within the app to automate actions, such as turning lights on/off or opening/closing the garage door at specific times.
6.6. Share Control
You can share control of your smart devices with family or friends through the Tuya Smart app, allowing multiple users to operate the garage door or gate remotely.
7. Maintenance
7.1. Keypad Battery Replacement
The keypad batteries (2 x CR2032) have an estimated life of 2 years with typical usage (4 operations per day). Replace them when the keypad's performance degrades or it stops responding.
7.2. Remote Control Battery Replacement
The RF remote control uses a 12V 23A battery. Replace it when the remote's range decreases or it fails to operate the receiver.
8. Troubleshooting
8.1. Device Not Functioning / Cannot Change Codes
If you are experiencing issues with the device not functioning or being unable to modify codes, please check the following:
- Power Supply: Ensure the receiver is correctly powered with the specified voltage (DC/AC 7-32V or AC 85-250V).
- Wiring: Double-check all wiring connections between the receiver and your garage/gate opener control board as per the wiring diagram (Figure 6). Incorrect wiring is a common cause of malfunction.
- Programming Steps: Review the programming steps for the RF remote control (Section 6.2) carefully. Ensure you are pressing the 'learn' button for the correct duration and then pressing the remote button promptly.
- Code Compatibility: Verify that your remote control is compatible with the receiver (fixed code, learning code, or rolling code 433.92MHz). The receiver is not compatible with PIC serial code.
- App Connection: For app control issues, ensure your phone is connected to a 2.4GHz Wi-Fi network, Bluetooth is enabled, and you have the correct Wi-Fi password. Try re-adding the device to the Tuya Smart app if necessary.
- Resetting: If programming issues persist, try erasing all stored codes by pressing and holding the 'learn' button for approximately 20 seconds until the LED goes out, then attempt to reprogram.
9. User Tips
- For optimal performance and security, ensure your Wi-Fi network is stable and password-protected.
- Regularly check the batteries in your keypad and remote control to avoid unexpected failures.
- Utilize the app's scheduling features to automate routine tasks, enhancing convenience and energy efficiency.
- When sharing device control, ensure you only share with trusted individuals.
10. Warranty and Support
For further assistance or detailed technical documentation, please refer to the official user manual PDF available at: Scimagic-RC SMG-8112 User Manual (PDF).
