Your App Already Works.
Now Make the Gate Open.
A programmable BLE5 relay for developers who want their own app to control physical access — not someone else’s cloud.
If You’ve Built the Software, This Is the Hardware You’ve Been Looking For
Building a mobile access control system is hard work. Getting the UI right, handling auth flows, syncing with your backend — you’ve already solved the hard problems. But then comes the moment every developer dreads: finding hardware that actually listens to your app.
Most access control hardware on the market is a closed box. It ships with its own app, its own cloud subscription, and its own set of rules about what you can and can’t do. If you’ve built a custom platform for gyms, offices, schools, or enterprises, you don’t need another vendor’s ecosystem — you need a relay module that simply does what your app tells it to.
Real Installations. Real Scenarios Your Software Can Power.
The relay doesn’t care what your app does — it just executes the command. Here’s how teams are putting it to work right now:
Gym & Fitness Access
Member opens the entry gate straight from your gym management app. Active subscription = gate opens. Expired = access denied. Your logic, your rules — the relay just executes.
Office & Co-Working Entry
Employee walks up to the turnstile, your app authenticates them, and the relay triggers the gate in under a second. No separate access cards to manage or replace.
Attendance + Gate in One Tap
When an employee marks attendance on your biometric app, the relay simultaneously unlocks the gate. Attendance marked = gate opens. No extra buttons, no separate door release.
Schools & Event Venues
Control campus or auditorium entry from your existing student or event management platform. Time-based permissions, visitor access, bulk grants — all managed in software.
Five Things That Make This a Developer’s Dream Hardware
Built Around Your App, Not Ours
This relay ships with no competing application and no vendor cloud. It’s a hardware layer that serves your software. Your app sends the command, the relay executes it — that’s the entire relationship. You stay in full control of the user experience, the data, and the business logic.
Full Source Code — Firmware and SDK
You get the complete C firmware source for the relay and reference SDK code for both Android and iOS. Need to add AES-encrypted handshakes? Want faster turnstile response times? Need custom logging hooks? The code is yours. Modify it, optimize it, make it part of your product.
BLE5 — The Fastest Bluetooth Available
Bluetooth Low Energy 5.0 delivers faster connection establishment, greater range, and better stability than older BLE versions. At a security gate, a 3-second delay is simply not acceptable. BLE5 means sub-second response times, every time — even in environments with many competing Bluetooth devices.
Completely Offline at the Gate
The BLE connection between your app and the relay is direct, local, and peer-to-peer. A network outage, a slow server, or a dropped 4G signal will never leave your users standing at a locked gate. If the phone is within Bluetooth range, the door opens. No internet required at the point of entry.
USB Type-C Powered
Simple, universal power via USB-C. No proprietary connectors, no special power supplies, no installation headaches. Whoever is wiring the gate hardware will appreciate the simplicity.
Most off-the-shelf access control hardware is designed to lock you into a vendor’s ecosystem. We built this relay for the opposite reason — so that your app stays the product, and the hardware simply disappears into the infrastructure doing exactly what it’s told.
Your Dev Team Can Be Up and Running in Days, Not Weeks
The SDK is well-documented and the firmware is clean. There’s no proprietary protocol to reverse-engineer, no NDAs to sign before you see the code. Here’s what your developers can do with it straight away:
- Implement custom authentication logic before any unlock command is dispatched from the app.
- Build in AES encryption for fully secure BLE communication between phone and relay.
- Log every relay trigger event in your own backend — zero dependency on third-party data services.
- Adapt and extend the firmware to support specific gate hardware brands already at your install sites.
- Integrate the relay trigger as part of a broader attendance, HR, or event management workflow.
Everything You Need to Start Testing This Week
We’ve put together everything a development team needs to go from unboxing to a working integration without unnecessary back-and-forth:
BLE5 Relay Module
Ready to wire into tripod gates, flap barriers, or swing doors at your installation site.
Relay Firmware Source Code
Fully open C code. Modify, extend, and make it yours — no restrictions.
Android & iOS SDK
Reference integration code in React Native to cut weeks off your development cycle.
Technical Documentation
Wiring diagrams, BLE command structure, API references — everything in one place.
Integration Support
Our engineering team is available to help your developers get connected and unblocked fast.
Frequently Asked Questions
Ready to Bridge Your App and the Gate?
Download the sample React Native code and start testing the integration today. If you have questions about your specific setup, our engineering team is ready to help.
⬇️ Download Sample Code in React Native
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