---
product_id: 122138821
title: "ASMT402 Smart Home Thermostat to adds Maestro Connectivity to existing Line Voltage Electric Baseboards, Convectors, and Fan Heaters"
brand: "stelpro"
price: "$187.32"
currency: USD
in_stock: true
reviews_count: 5
url: https://www.desertcart.us/products/122138821-asmt402-smart-home-thermostat-to-adds-maestro-connectivity-to-existing
store_origin: US
region: United States of America
---

# Energy Savings Smartphone Control Humidity Display ASMT402 Smart Home Thermostat to adds Maestro Connectivity to existing Line Voltage Electric Baseboards, Convectors, and Fan Heaters

**Brand:** stelpro
**Price:** $187.32
**Availability:** ✅ In Stock

## Summary

> 🔥 Elevate Your Comfort, Conquer Your Energy Bills!

## Quick Answers

- **What is this?** ASMT402 Smart Home Thermostat to adds Maestro Connectivity to existing Line Voltage Electric Baseboards, Convectors, and Fan Heaters by stelpro
- **How much does it cost?** $187.32 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/122138821-asmt402-smart-home-thermostat-to-adds-maestro-connectivity-to-existing)

## Best For

- stelpro enthusiasts

## Why This Product

- Trusted stelpro brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Real-Time Monitoring:** Stay informed with relative room humidity display.
- • **Seamless Connectivity:** Integrate with Maestro or Zigbee for effortless control.
- • **Smart Energy Management:** Achieve up to 25% energy savings with optimal usage.
- • **User-Friendly Interface:** Control your heating from anywhere with a mobile device.
- • **Versatile Compatibility:** Works with various line voltage systems for maximum flexibility.

## Overview

The Stelpro ASMT402 Smart Home Thermostat transforms your existing line voltage electric baseboards, convectors, and fan heaters into a smart heating solution. With Maestro connectivity, it allows for seamless control via smartphone or Zigbee hub, ensuring optimal energy efficiency and real-time monitoring of room humidity. Experience significant energy savings while enjoying the convenience of modern technology.

## Description

ASMT402 Smart Home Thermostat to adds Maestro Connectivity to existing Line Voltage Electric Baseboards, Convectors, and Fan Heaters

## Features

- Stelpro ASMT402 Maestro Smart Home Thermostat to adds Maestro Connectivity to existing Line Voltage Electric Baseboards, Convectors, and Fan Heaters
- Full potential is reached when paired with the MAESTRO ASMC402 controller thermostat to achieve full heat automation in the home
- Compatible with Maestro Controller or Zigbee Hub: Control At Your Fingertips With Your Smartphone Or Mobile Device
- Can also be linked to an existing Zigbee network controlled by any Zigbee compatible controller
- Relative Room Humidity Display
- Energy Consumption Assessment for Optimal Energy Efficiency when used with the MAESTRO ASMC402 controller thermostat
- Energy Savings Up To 25% Depending on Use and combined with the MAESTRO ASMC402 controller thermostat
- Min. Watts (150/260/300) - Max Watts (2000/3400/4000) - Voltage (120/208/240) - Amperage (16. 7)

## Images

![ASMT402 Smart Home Thermostat to adds Maestro Connectivity to existing Line Voltage Electric Baseboards, Convectors, and Fan Heaters - Image 1](https://m.media-amazon.com/images/I/61u+oW5dUSL.jpg)
![ASMT402 Smart Home Thermostat to adds Maestro Connectivity to existing Line Voltage Electric Baseboards, Convectors, and Fan Heaters - Image 2](https://m.media-amazon.com/images/I/71-Yhu2x8JL.jpg)
![ASMT402 Smart Home Thermostat to adds Maestro Connectivity to existing Line Voltage Electric Baseboards, Convectors, and Fan Heaters - Image 3](https://m.media-amazon.com/images/I/51aHSSjdlsL.jpg)
![ASMT402 Smart Home Thermostat to adds Maestro Connectivity to existing Line Voltage Electric Baseboards, Convectors, and Fan Heaters - Image 4](https://m.media-amazon.com/images/I/41C2xgCLJbL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Awesome smart thermostat when paired with Echo ZigBee hub
  

*by G***L on Reviewed in the United States 🇺🇸 on December 3, 2019*

I'd been looking for a smart thermostat to pair with the line voltage heater in my apartment. The Mysa thermostats seemed nice, but I didn't need HomeKit integration and they were more expensive. I was able to install two of these thermostats. One controls a fan-forced heater in the living room, and the other controls a baseboard heater in the bedroom. Both are paired with my Echo Show, and (with Alexa Routines) I've been able to automate home/away temperatures. Awesome hardware, and it was very easy to install. I had a 2-wire installation, so it was seamless.

### ⭐ 1.0 out of 5 stars







  
  
    Only worked for a year
  

*by B***B on Reviewed in the United States 🇺🇸 on January 25, 2021*

The product worked great for about a year.  Then the temp control (up and down) stopped responding to input.  Contact the company for a warranty replacement, received one reply and have since been ghosted.Please beware that the company seems to not honor their warranty.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Works great
  

*by N***5 on Reviewed in the United States 🇺🇸 on October 6, 2020*

This unit works great with control unit control heat from anywhere

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.us/products/122138821-asmt402-smart-home-thermostat-to-adds-maestro-connectivity-to-existing](https://www.desertcart.us/products/122138821-asmt402-smart-home-thermostat-to-adds-maestro-connectivity-to-existing)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-05*