Automating an access control system can significantly enhance the convenience and security of a home or office. Shelly Plus UNI, a versatile and compact Wi-Fi module, is an excellent choice for this task. Designed for low-voltage applications, Shelly Plus UNI can control various sensors and devices, making it ideal for integrating with an access control buzzer.
Required Components
Wiring
Power Supply: Connect power to the Shelly Plus UNI. Ensure the voltage is within the supported range (12V-36V DC or 12V-24V AC).
If powering Shelly Uni via AC, connections should be made to VAC1 and VAC2
Most Access Control Systems are powered via 24vAC and can be used to power Shelly Plus UNI.
If suitable power is not available directly from the Access Control System then an external power supply must be used.
Buzzer Connection:
Connect one terminal of the buzzer to the OUT1 terminal on the Shelly Plus UNI.
Connect the other terminal of the buzzer to the power supply's ground or negative terminal.
Example System Diagram
Shelly Plus UNI Wiring Diagram
Legend
VAC1 | Red | 8-24 VAC / 9-28 VDC power supply input 1 |
VAC2 | Black | 8-24 VAC / 9-28 VDC power supply input 2 |
ANALOG IN | White | Analog input |
SENSOR VCC | Yellow | Power supply for 1-Wire sensors |
DATA | Blue | 1-Wire data line |
+ 5 VDC | Gray | 5 VDC power supply positive input |
GND | Green | 5 VDC power supply ground input and Sensor ground |
COUNT IN | Purple | Counter input |
IN1 | Orange | Digital input 1 |
IN2 | Brown | Digital input 2 |
OUT 1 | Black | Solid-state relay 1 terminals |
OUT 2 | Black | Solid-state relay 2 terminals |
Shelly Smart Control App Configuration
Open the Shelly Smart Control app.
Tap the blue + icon at the bottom right.
Tap + Add a New Device.
Tap Add Via WiFi (AP Scan).
Tap Next.
Tap the relay.
Tap Next.
Tap + Add Device. The inclusion process lasts for several moments.
Type a name for the device.
Select an image to represent the device in the Smart Control app.
Select the Room to add the device to. Tap Save.
Tap Next. The device is associated with your Smart Control account.
The device is now included in Shelly Smart Control app and registered to a Cloud Account. It can be controlled from any location where internet is available.
Updating the Firmware of the Device
Tap the device to update.
Tap the Settings button.
Tap the Firmware version dropdown.
The option to enable auto-update is presented, as is the current and available firmware version. Tap Update, then tap Update again.
The device updates
The update process may take several moments and require resetting the device. It is not recommended to perform a firmware update if the device is not physically reachable.
Output 1
In Shelly Smart Control, Output 1 is designated for buzzer control. This functionality can be utilized independently within the application by simply pressing the button. Alternatively, you have the option to expand its capabilities by incorporating timers, schedules, and creating a "Scene" to trigger a Push Notification upon button activation. Conducting experiments in this area will result in the development of a versatile system suitable for various scenarios.
