---
product_id: 537396305
title: "Smart Humidity Sensor Switch for Bathroom Fan by Martin Jerry | tasmota with ESP8285 2.4G WiFi chip, Fan Control for Home Assistant | Smart Home Devices via MQTT"
brand: "martin jerry"
price: "$56.98"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/537396305-smart-humidity-sensor-switch-for-bathroom-fan-by-martin-jerry
store_origin: US
region: United States of America
---

# 2.4G WiFi chip for seamless connectivity Local data storage ensures privacy & security Auto humidity detection for smart fan control Smart Humidity Sensor Switch for Bathroom Fan by Martin Jerry | tasmota with ESP8285 2.4G WiFi chip, Fan Control for Home Assistant | Smart Home Devices via MQTT

**Brand:** martin jerry
**Price:** $56.98
**Availability:** ✅ In Stock

## Summary

> 🌬️ Stay fresh, stay smart — your bathroom’s new best friend!

## Quick Answers

- **What is this?** Smart Humidity Sensor Switch for Bathroom Fan by Martin Jerry | tasmota with ESP8285 2.4G WiFi chip, Fan Control for Home Assistant | Smart Home Devices via MQTT by martin jerry
- **How much does it cost?** $56.98 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/537396305-smart-humidity-sensor-switch-for-bathroom-fan-by-martin-jerry)

## Best For

- martin jerry enthusiasts

## Why This Product

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

## Key Features

- • **Privacy-First Design:** All data stays local—no cloud vulnerabilities, giving you full control and peace of mind.
- • **Flexible Manual Override:** Switch between auto and manual modes anytime without disrupting your smart settings.
- • **Plug & Play with TASMOTA:** Pre-flashed with TASMOTA firmware for advanced customization and zero reliance on proprietary apps.
- • **Effortless Climate Control:** Automatically activates your bathroom fan based on real-time humidity levels, keeping your space fresh without lifting a finger.
- • **Seamless Smart Home Integration:** Compatible with Home Assistant, Alexa, and Google Home via MQTT for a truly connected lifestyle.

## Overview

The Smart Humidity Sensor Switch by Martin Jerry features a 2.4G WiFi-enabled ESP8285 chip, enabling automatic fan control based on humidity levels. Pre-flashed with TASMOTA firmware and supporting MQTT, it integrates seamlessly with popular smart home platforms like Home Assistant, Alexa, and Google Home. Designed for privacy with local data storage, it offers both auto and manual modes for flexible, secure, and efficient bathroom ventilation.

## Description

Smart Humidity Sensor Switch for Bathroom Fan by Martin Jerry | tasmota with ESP8285 2.4G WiFi chip, Fan Control for Home Assistant | Smart Home Devices via MQTT

## Features

- Installation : This wifi switch is a single pole (NOT a 3 way smart switch) wifi relay switch (not dimmer). Neutral wire and 2.4G wifi router are required
- Auto & Manual Mode: At the auto mode, it can turn on/off the fan according to humidity percentage detected automatically. Users can control it manaully anytime, and this will not affect the performance of Auto mode next time.
- TASMOTA : This wifi light switch is TASMOTA pre-flashed, Not Smart Life or Tuya App. ESP8266 inside can support 2.4G WiFi Only
- MQTT : smart switches support MQTT to link with other smart home gadgets. Home Assistant, Alexa, and Google Home are also supported
- Sercurity : All data is stored locally, and users can completely control these smart home products without worrying about data security

## Product Details

- **Operation Mode:** ON-OFF-ON
- **Current Rating:** 2 Amps
- **Operating Voltage:** 120 Volts (AC)
- **Contact Type:** Normally Closed
- **Connector Type:** Screw
- **Brand:** Martin Jerry
- **Terminal:** Wire
- **Item dimensions L x W x H:** 4.22 x 1.53 x 1.53 inches
- **Circuit Type:** 1-way
- **Actuator Type:** Electronic WiFi Controlled Switch

## Images

![Smart Humidity Sensor Switch for Bathroom Fan by Martin Jerry | tasmota with ESP8285 2.4G WiFi chip, Fan Control for Home Assistant | Smart Home Devices via MQTT - Image 1](https://m.media-amazon.com/images/I/61yWhOyGiHL.jpg)
![Smart Humidity Sensor Switch for Bathroom Fan by Martin Jerry | tasmota with ESP8285 2.4G WiFi chip, Fan Control for Home Assistant | Smart Home Devices via MQTT - Image 2](https://m.media-amazon.com/images/I/71IkpfSPcHL.jpg)
![Smart Humidity Sensor Switch for Bathroom Fan by Martin Jerry | tasmota with ESP8285 2.4G WiFi chip, Fan Control for Home Assistant | Smart Home Devices via MQTT - Image 3](https://m.media-amazon.com/images/I/81Xda8TFvsL.jpg)
![Smart Humidity Sensor Switch for Bathroom Fan by Martin Jerry | tasmota with ESP8285 2.4G WiFi chip, Fan Control for Home Assistant | Smart Home Devices via MQTT - Image 4](https://m.media-amazon.com/images/I/61nTKd3qBLL.jpg)
![Smart Humidity Sensor Switch for Bathroom Fan by Martin Jerry | tasmota with ESP8285 2.4G WiFi chip, Fan Control for Home Assistant | Smart Home Devices via MQTT - Image 5](https://m.media-amazon.com/images/I/618Lb71rgWL.jpg)

---

## 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/537396305-smart-humidity-sensor-switch-for-bathroom-fan-by-martin-jerry](https://www.desertcart.us/products/537396305-smart-humidity-sensor-switch-for-bathroom-fan-by-martin-jerry)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-01-30*