Smart access control, without the cloud
KLOKL builds open, local-first IoT hardware for Home Assistant — starting with the MQTT-OSDP Bridge, connecting professional-grade access control readers to your smart home
At KLOKL, we build the bridge between industrial-grade hardware and the smart home. Our flagship product, the MQTT-OSDP Bridge, lets you integrate professional OSDP card readers directly into Home Assistant — no cloud, no subscription, no custom code required. Just firmware you can trust, running on hardware you own.
We also help businesses across Austria navigate data privacy law through our Data Privacy Hub, applying the same principle everywhere: local control, full transparency.
IoT & Automation firmware for the ESP32-C3. Full OSDP master implementation, MQTT with Home Assistant auto-discovery, HTTPS web interface, OTA updates — all on-device, all yours.
Data Privacy Hub DSGVO/GDPR compliance consulting for Austrian businesses. Clear, practical guidance — not just paperwork.
OSDP Bridge features
Local-First
No cloud dependency, no subscription, no third-party servers in between. The MQTT-OSDP Bridge runs entirely on-device, so your access events and automations stay on your own network.
Native Home Assistant Integration
MQTT with Home Assistant auto-discovery means your OSDP reader shows up ready to use — no manual entity setup, no YAML wrestling. Just wire it up and start automating.
Professional OSDP Support
A full OSDP master implementation in C++, built specifically for Hikvision readers over RS-485. Not a generic wrapper — firmware written from the protocol up.
Secure by Design
On-device certificate generation and a built-in HTTPS web interface keep setup and monitoring secure by default, without relying on external services.
OTA Updates
The bridge improves over time through over-the-air updates — no re-flashing, no physical access to the device required to stay current.
Photo by Andrew Kliatskyi on Unsplash.
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