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UCMA/Pi

Home Assistant Built Right Into Your Comfort Panel

The UCMA/Pi brings the power of Home Assistant directly inside your Cytech Comfort alarm enclosure. No external hardware. No complicated setup. Just plug in, connect to your network, and your alarm is instantly accessible from any web browser or smartphone.

UCMA/Pi Module
UCMA/Pi — Raspberry Pi CM4 on Cytech UCM carrier board
Zero
External Hardware Needed
Pre-installed
Home Assistant OS + Comfort Add-on
Secure
Remote Access via Tailscale VPN
Full
Mobile App Control

About the product

Your Comfort System. Smarter Than Ever.

The UCMA/Pi is a compact add-on module that fits inside your existing Comfort alarm panel enclosure. It houses a Raspberry Pi Compute Module 4 (CM4) running Home Assistant OS — pre-configured and ready to go.

🏠

Home Assistant Built In

Full Home Assistant OS pre-installed. No external Raspberry Pi or server required — everything runs inside your Comfort panel enclosure.

🔌

Powered by the Comfort Bus

The UCMA/Pi draws power directly from the Comfort UCM bus — no external power supply or additional cabling needed.

📱

Control from Any Device

Access your alarm dashboard from any web browser on a PC, tablet, or phone. Arm, disarm, check zones — from home or anywhere in the world.

🔔

Push Notifications

Receive instant push notifications for all alarm events — arming, disarming, zone alerts, and bypassed zones — via the Home Assistant Companion app.

🔒

Secure Remote Access

Built-in Tailscale VPN provides secure, encrypted remote access from anywhere without opening ports on your router. Free for personal use.

⚙️

Full Entity Control

Access every Comfort data point — zone inputs, outputs, flags, counters, timers, and sensors — directly in Home Assistant.

How it works

Up and Running in Minutes

The UCMA/Pi ships with everything pre-configured. Connect it, power it on, and follow a short first-time wizard.

1

Set UCM ID

Set the DIP switch to a unique ID (ID 2 recommended) and mount in the Comfort enclosure.

2

Connect & Power On

Plug in the UCM cable and Ethernet cable. Power on your Comfort panel.

3

Run the Wizard

Open homeassistant.local:8123 in a browser and complete the 5-minute onboarding.

4

Upload your CCLX

Upload your Comfort configuration file to name all zones and outputs automatically.

5

You're Live

Your Comfort Alarm dashboard and all entities are ready. Add the mobile app for notifications.

Comfort Alarm Dashboard

Full Alarm Control in Your Browser

The built-in Comfort Alarm page is your command centre. Monitor status, arm or disarm in any mode, view zone states in real time, and review a live time-stamped event log.

Alarm Dashboard Features

  • Real-time alarm status: Disarmed, Away, Night, Day/Home, or Unavailable
  • One-tap arming in Away, Night, or Day mode
  • On-screen PIN keypad — works exactly like a physical Comfort keypad
  • Zone status tiles — open zones highlighted instantly
  • Zone-not-ready warnings prevent accidental part-arming
  • Armed Night mode with visual bypass indicators
  • Live Alarm Message Log with timestamps for all system events
  • Fully responsive — identical experience on desktop and mobile
Comfort Alarm Dashboard
Keypad
On-screen PIN keypad & arm buttons
Zone status
Zone status — open zones highlighted

Comfort Entities & System Info

Complete Visibility and Control

Beyond alarm control, the UCMA/Pi exposes every aspect of your Comfort system in Home Assistant. View and control outputs, flags, counters, timers, and sensors.

Comfort Entities

Everything Your System Knows

  • Zone Inputs — Monitor up to 96 zones by name from your CCLX configuration
  • Outputs — Switch any Comfort output on or off directly from the dashboard
  • Flags — Toggle binary on/off variables used in Comfort programming logic
  • Counters — View and edit integer counter values (0–255) on the panel
  • Timers — Track up to 64 programmable timers
  • Sensors — Monitor analogue inputs and write new values to writable sensors
  • System Info — Battery voltage, DC supply health, charger status, and firmware version
  • Time Sync — Automatically synchronises date and time on your Comfort panel

Mobile & Remote Access

Your Alarm in Your Pocket — Anywhere

The Home Assistant Companion app for Android and iOS gives you the full dashboard on your phone, with push notifications for every alarm event. Tailscale VPN keeps the connection secure.

Home Assistant Companion App

  • Free app for Android (Google Play) and iOS (App Store)
  • Full Comfort Alarm dashboard on your phone — arm, disarm, check zones
  • Push notifications: arm/disarm events, zone alerts, bypassed zones
  • Automatic local/remote switching — fast on home Wi-Fi, secure via Tailscale when away
  • Multiple user accounts — family members each have their own login

Tailscale Remote Access

  • Zero-configuration VPN — no port forwarding, no static IP required
  • Free for personal use (up to 100 devices)
  • MagicDNS: access via http://homeassistant:8123 from anywhere
  • Encrypted end-to-end — your data never passes through a third-party cloud

ComfortLink — Access by Web URL & QR Code

  • A unique secure URL (e.g. https://cytech-1.tailad4a00.ts.net) is generated for your UCMA/Pi
  • Click the link on your phone or desktop — or scan the QR code — to access your Comfort Home Assistant from anywhere in the world
  • Secure, end-to-end encrypted connection — no port forwarding or VPN app required
  • Share the link with family members for their own remote access
ComfortLink QR Code

Scan to access your Comfort Home Assistant remotely

Push notifications

Pre-installed Add-ons

Ready to Go — Out of the Box

The UCMA/Pi ships with key Home Assistant add-ons pre-installed and pre-configured.

Core

Cytech Comfort Add-on

The MQTT bridge connecting your Comfort panel to Home Assistant. Translates all Comfort events and entities in real time.

Core

Mosquitto MQTT Broker

Open-source MQTT broker, pre-configured for local communication between the Comfort add-on and Home Assistant.

Remote Access

Tailscale VPN

Secure, zero-config VPN for accessing your Home Assistant from anywhere. Sign up free with Google, Microsoft, or GitHub.

Technical Specifications

UCMA/Pi Specifications

ParameterSpecification
Hardware
Compute ModuleRaspberry Pi Compute Module 4 (CM4)
Operating SystemHome Assistant OS (HAOS) — pre-installed
StoragePre-programmed micro SD card (included)
NetworkEthernet RJ45 — wired connection required
Power SupplyPowered entirely via Comfort UCM bus — no external supply needed
USB1 × USB 2.0 (maintenance use only)
Display1 × Micro-HDMI (maintenance use only)
Comfort Integration
Connection to ComfortUCM bus via 4-pin connector and supplied cable
UCM IDConfigurable via SW7 DIP switch (factory default: ID 1 — must be changed to ID 2+)
Zone Inputs8–96 (configurable, in multiples of 8)
Zone Outputs0–96 (configurable, in multiples of 8)
Comfort Flags1–254
Comfort Counters0–255
Comfort Timers0–64
Comfort Sensors0–31
Comfort Responses0–1024
Configuration FileCCLX (exported from Comfigurator)
Time SynchronisationOptional — sets Comfort panel date/time at logon and daily at midnight
© 2026 Cytech Technology Pte Ltd  |  UCMA/Pi Product Brochure v1.0  |  www.cytech.biz
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