Server Room Temperature Monitor Pro Kit with ESP32 & DHT22: Build a Telegram Bot for Live Alerts & Relay Control

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Server rooms and data centres cannot afford blind spots in environmental monitoring. This kit lets you build a production-style monitoring tool: an ESP32 that reads precise temperature and humidity from a DHT22 sensor, then reports those values to your phone via Telegram. Even better, you can command a relay to switch on a cooling fan, backup system, or warning light just by typing a chat message — exactly the kind of remote control used in professional infrastructure management.

What You'll Build

You'll assemble the DHT22 sensor and relay module on the breadboard, program the ESP32 to join a Wi‑Fi network and securely connect to Telegram’s bot API, then deploy the unit inside a server rack or enclosed electronics cabinet. The bot responds to /temp and /humidity commands with live readings, and /relay_on / /relay_off let you toggle a real electrical load from anywhere. This is a fully functional, interactive IoT dashboard — without touching a cloud platform.

What You'll Learn

• Interfacing the DHT22 single‑wire sensor with ESP32 to capture temperature (±0.5°C) and humidity data
• Creating and configuring a Telegram bot using BotFather and handling HTTPS API calls from a microcontroller
• Safely driving a 5V relay module using a transistor‑buffered GPIO pin to control mains‑rated appliances
• Writing non‑blocking code that constantly polls sensors and parses incoming chat commands without missing updates

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is ideal for CBSE Class 11–12 students who need a practical IoT project for computer science or informatics practices, B.Tech ECE/EEE undergraduates building mini‑projects on embedded systems, and participants in the Smart India Hackathon hardware track. It also gives ATL mentors a real‑world automation example that ties together sensors, cloud messaging, and actuator control — all with components that match institutional lab inventories found in IIT, NIT, VIT, and BITS campuses.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.