Sentry-1 Door Sensor Setup Guide

Mobile App Setup

Pair and view your first reading.

Download the iMatrix app

Install from App Store (iOS) or Google Play (Android).

Open the app and tap +

The plus icon is in the top-right corner of the home screen.

Scan the QR code

The QR code is on the back of your Sentry-1. Use the in-app scanner — the sensor pairs automatically.

Follow the on-screen prompts

The app walks through Bluetooth pairing, first-reading verification, and initial calibration.

Name your Sentry-1 and add a photo

Give it a descriptive name (e.g. "Wine Cellar" or "Freezer 2") and optionally attach a photo of the location. Saves instantly.

View your first measurements

The sensor dashboard shows live temperature, humidity, and any other supported parameters. Readings refresh per your polling interval.

Web Dashboard

Create an account and configure sensor settings.

Create an iMatrix Cloud account

Go to cloud.imatrixsys.com/registration and register — your sensors link automatically to any account using the same email as the app.

Open sensor settings

Select the cogwheel icon in the top-right corner of the sensor's dashboard tile.

Customize naming and location

Give each sensor a clear name tied to its physical location. Upload a photo if it helps the team identify it at a glance.

Select displayed parameters (Advanced view)

In Advanced view, choose which parameters appear on the dashboard tile and list view. Drag to reorder.

Tune sensor performance (optional)

Advanced view exposes Polling time (how often readings are taken), Sample time (how often readings are saved to flash), and Check-in time (how often data is uploaded). Default settings are optimized for battery life — only change if you need faster updates.

Notifications & Alerts

Route alerts to email, SMS, and push.

Add notification channels

Dashboard → Settings → Notifications and Reports. In the Channels section, add email, phone number, and SMS number.

Select which channels receive which alerts

You control the routing — critical alerts can go to SMS+email, info-level to email only. Note: real-time alerts require either the app running within Bluetooth range, or an iMatrix Wi-Fi Micro Gateway.

Set alarm thresholds per parameter

In Basic view, set Alarm High, Alarm Low, and Threshold in time for each parameter. Advanced view supports up to 6 alert levels per parameter.

Pro Tips

Remove the battery protective film first — pull the plastic tab near the battery compartment before pairing, or the sensor won't power on.
Mounting: 3M adhesive pads are pre-applied. The sensor body goes on the stationary frame; the magnet goes on the moving door or window.
Keep magnet-to-sensor distance under ~10 mm when closed. Wider gaps produce spurious open alerts.
Use the Sentry-1 with the Micro Gateway for 24/7 alerts — otherwise your phone must be in BLE range.
Tamper switch triggers an alert if the sensor is removed from its mounting surface.
Coin-cell battery is user-replaceable — see the product page for replacement part.

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