---
title: How does the Bold Controller work?
description: The Bold Controller allows you to integrate existing wired electronic locking systems, such as gates, garage doors, or central doors.
---
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# How does the Bold Controller work?
## The Bold Controller allows you to integrate existing wired electronic locking systems, such as gates, garage doors, or central doors.
The Bold Controller allows you to control existing wired electronic locking systems, such as gates, garage doors or central building doors, easily and securely through the Bold ecosystem.
Every Bold Controller is equipped with a green connector on the back, specifically designed for this controller functionality.
### Relay settings
You can configure the controller relay as either:
- **Normally open** – the circuit will close upon activation.
- **Normally closed** – the circuit will open upon activation.
Choose the setting that matches your electronic lock’s requirements. You can also customise the activation time anywhere between **5 and 120 seconds**, or select **Pulse mode** for momentary activation—ideal for doors that require a quick trigger.
You can find a step by step instruction on how to connect the Controller relay [here](https://knowledgebase.boldsmartlock.com/en/knowledge/how-to-connect-the-controller-relay?hsLang=en).
### Activating the controller
To activate the lock, either:
- Press the **push button** on the Bold Controller
- Use the **Bold App**, just like you would with a Bold smart lock.
Before installation, check the specifications of your locking system to ensure compatibility. The relay can be programmed in the Bold App to suit different electronic locks, supporting a maximum switching current of 240V AC / 48V DC @ 3A.
> **Installation tip:** Connect your existing electronic lock to the **2-wire interface** on the Bold Controller. Always verify the wiring specifications for a safe and reliable setup.
### Controller and gateway in one device
A Bold Controller can be used simultaneously as a gateway and controller. Please note that the Bold smart lock and the Controller/Connect must be within a Bluetooth range of 1–3 meters to ensure an optimal connection.
With Bold, you seamlessly combine modern access technology with existing systems – and always retain control, without compromises.
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