Unlike cloud-based systems or manual inventory methods, Keg Sentry is a fully standalone solution that delivers real-time, keg-level inventory without reliance on software, cloud infrastructure, or manual processes. 
The system uses a modular, one-to-one architecture in which each keg is equipped with a dedicated monitor module and flow sensor.  This design enables precise measurement and allows the system to scale linearly with the number of taps. 

Keg Sentry System Features

Keg Sentry is a hardware-first platform designed for simplicity, reliability, and scalable deployment. Its core features include:
  • Keg Sentry's 3-digit display technology is designed for highly reliable Copilot photo data transfer.
  • No Single Point of Failure — A failure typically affects only a single tap, not the entire monitoring system. A monitor module can simply be replaced with a spare.
  • No Software or Source-Code Dependency — Core measurement requires no operating system, application software, or cloud platform, minimizing cybersecurity exposure, software maintenance, and technology obsolescence.
  • Secure Wired Connectivity — Provides consistent, tamper-resistant communication without dependence on Wi-Fi, Internet connectivity, or cloud infrastructure.
  • Universal Wiring Architecture — Standardized connections simplify installation, replacement, inventory, and future system expansion.
  • Click-to-Calibrate — Enables fast, straightforward calibration during installation and simple recalibration whenever required.
  • Integrated 12 VDC Battery Backup — Telecommunications-grade backup power helps ensure uninterrupted monitoring and measurement continuity during power outages.
Keg Sentry®
An Autonomous Draft Beer Monitoring Appliance
Keg Sentry is not a computer. It uses presettable hardware counters rather than software to measure and display beer poured. As shown in the drawing above, you set the keg size with the black 3-digit switch using a ballpoint pen. A second 2-digit switch, hidden behind the front cover, sets the pour value—pints, half-liters, or other serving sizes.