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TELEGRAHAM TESTED SENTINELAPEX SENTINEL PROJECT
Free software · Waitlist now open

Meet Apex Sentinel.

Apex can leave additional alarm conditions without a new notification while an earlier alarm is awaiting acknowledgment. Apex Sentinel independently monitors alarm states and can send its own notifications. The software is free; you supply the ESP32 hardware.

Illustration of Apex Sentinel monitoring alarms and sending notifications
Important: the black Sentinel box in the illustration is a visual mockup only. No finished black enclosure or preassembled Sentinel device is included or sold. You must purchase your own compatible ESP32 board. An ESP32 hardware option is linked below; software will be provided free when released.
View an ESP32 hardware option on Amazon ↗

Join the waitlist

Leave your email and I'll let you know when Apex Sentinel is ready to download. No purchase or payment required to join.

Your email will be used only for Apex Sentinel release updates. This form does not place a hardware order.

Supported hardware

Choose a simple ESP32 board or a M5Stack Core2 with a built-in screen and controls. You supply the hardware; Apex Sentinel software will be free when released.

A simple board. Independent alarms.

ESP32ESP32-S3ESP32-C3

A compatible development board with at least 4 MB of flash, a data-capable USB cable, and a USB power supply are all you need to get started.

Set up WiFi, Apex connections, and notifications in your browser. Add an optional buzzer or relay if you want a local audible alarm.

See an ESP32 hardware option ↗
More information, right at the tank

If you decide to move up to the Core2, these features improve your Apex Sentinel experience.

M5Stack Core2

  • A screen at a glance. See whether everything is OK, active alarms, and monitored readings.
  • Touch controls. Acknowledge alarms, change screens, and adjust brightness on the device.
  • Sound and vibration. Enable the built-in speaker and vibration for local alerts.
  • Battery backup. Keep running when USB power is lost, with a power-cut alarm.

Remote power-cut notifications still need a working network. A UPS for your router and modem can help keep that path available.

View M5Stack Core2 on Amazon ↗

Apex Sentinel setup: 1, 2, 3.

Here’s how you’ll get started when the software is released.

Install on your board

Connect it by USB, then open the browser-based installer in Chrome or Edge on a computer. Choose the correct board type and install the firmware.

Connect WiFi and Apex

Restart the board, join its ApexSentinel-xxxx setup network, and follow the browser walkthrough to connect to your home WiFi and find your Apex.

Choose and test your alerts

Set your alarm conditions and notification channels. Send a test notification and safely test an alarm so you know the whole path works.

Join the release waitlist ↑