---
product_id: 91241449
title: "Siemens RDH100 Digital Thermostat"
brand: "siemens"
price: "NT$2884"
currency: TWD
in_stock: true
reviews_count: 13
category: "Siemens"
url: https://www.desertcart.tw/products/91241449-siemens-rdh100-digital-thermostat
store_origin: TW
region: Taiwan
---

# Compact 120x90x26.9 mm Battery powered (2x AA) Accurate temp control 5-30°C Siemens RDH100 Digital Thermostat

**Brand:** siemens
**Price:** NT$2884
**Availability:** ✅ In Stock

## Summary

> 🌡️ Stay cool, stay smart — control your comfort like a pro!

## Quick Answers

- **What is this?** Siemens RDH100 Digital Thermostat by siemens
- **How much does it cost?** NT$2884 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/91241449-siemens-rdh100-digital-thermostat)

## Best For

- siemens enthusiasts

## Why This Product

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

## Key Features

- • **Energy-Smart Operation:** Short heating cycles optimize energy use while keeping your space cozy.
- • **Reliable Battery Power:** Runs on standard AA batteries for cordless convenience and uninterrupted control.
- • **Effortless Installation:** Simple two-wire setup gets you up and running in minutes—no electrician needed.
- • **Clear, Intuitive Display:** Large backlit LCD shows current and set temperatures at a glance, even in low light.
- • **Precision Comfort Control:** Maintain your ideal temperature with ±0.5°C accuracy and minimal overshoot.

## Overview

The Siemens RDH100 Digital Thermostat offers precise manual temperature control from 5 to 30°C with a clear, backlit LCD display. Battery powered by two AA cells, it features a compact design and easy two-wire installation. Its advanced control logic minimizes temperature swings and energy waste, making it a reliable, user-friendly solution for maintaining perfect indoor comfort.

## Description

Replaces RDH10 Large LCD display The digital display shows the actual room temperature and the comfort temperature setpoint. When the heating output is active, the triangle symbol appears.

Review: Value for money, accurate control. - easy to install on two wire system, displays set point and current temperature with simple rotary temperature control. Has much closer temperature control with smaller dead band and less overshoot than previous controller. has shorter heating and rest intervals to ensure temperature stays close to the set point. Temperature checked against a glass thermometer and is spot on.;
Review: Excellent product and Service - Excellent.

## Features

- Set point 5-30C
- 5(2)A volt-free contacts
- Dimensions 120x90x26.9 mm HxWxD
- Battery Powered (2 x AA)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B078WJ78K7 |
| Backlight | Yes |
| Best Sellers Rank | 247,057 in DIY & Tools ( See Top 100 in DIY & Tools ) 173 in Home Programmable Thermostats |
| Brand | SIEMENS |
| Brand Name | SIEMENS |
| Colour | White |
| Connectivity Protocol | Wi-Fi |
| Connectivity Technology | Wired |
| Control Method | Remote |
| Control Type | Button Control |
| Controller Type | Push Button |
| Controller type | Push Button |
| Customer Reviews | 4.3 out of 5 stars 245 Reviews |
| Display Type | graphical |
| Global Trade Identification Number | 07612914110916 |
| Included Components | S55770-T377 |
| Item Shape | Rectangular |
| Item Type Name | Thermostat |
| Item Weight | 0.23 Kilograms |
| Manufacturer | Siemens |
| Manufacturer Part Number | S55770-T377 |
| Material Type | Plastic |
| Model Name | RDH100 |
| Model Number | S55770-T377 |
| Model name | RDH100 |
| Mounting Type | Wall Mount |
| Number of Batteries | 2 AA batteries required. |
| Power Source | Battery Powered |
| Product Style | Active |
| Screen Size | 4.45 Centimetres |
| Special Features | With cable |
| Special feature | With cable |
| Specific Uses For Product | Fleece |
| Specific uses for product | Fleece |
| Temperature Control Type | Manual |
| Unit Count | 1.0 count |
| Voltage | 1.5 Volts |

## Product Details

- **Brand:** SIEMENS
- **Model name:** RDH100
- **Controller type:** Push Button
- **Special feature:** With cable
- **Colour:** White
- **Specific uses for product:** Fleece
- **Temperature Control Type:** Manual
- **Connectivity technology:** Wired
- **Included components:** S55770-T377
- **Power source:** Battery Powered

## Images

![Siemens RDH100 Digital Thermostat - Image 1](https://m.media-amazon.com/images/I/51srES+txRL.jpg)

## Questions & Answers

**Q: Is it wireless connection**
A: Yes it is wireless

## Customer Reviews

### ⭐⭐⭐⭐⭐ Value for money, accurate control.
*by J***E on 5 January 2026*

easy to install on two wire system, displays set point and current temperature with simple rotary temperature control. Has much closer temperature control with smaller dead band and less overshoot than previous controller. has shorter heating and rest intervals to ensure temperature stays close to the set point. Temperature checked against a glass thermometer and is spot on.;

### ⭐⭐⭐⭐⭐ Excellent product and Service
*by R***E on 14 December 2025*

Excellent.

### ⭐⭐⭐⭐ Excellent room thermostat! Easy to use!
*by N***E on 27 December 2025*

It can be a little confusing if you don't realise that there needs to be at least 1 degree difference between the current room temperature and the selected setting before the boiler will be instructed to turn on the heating. Otherwise it works really well. The numbers are big enough to see and changing the temperature setting in 0.5 degree steps, using the big rotary dial is simple.

## Frequently Bought Together

- Siemens RDH100 Digital Thermostat
- Siemens Q2100 100-Amp Double Pole Type QP Circuit Breaker
- 20 Amp 1-Pole Dual Function (CAFCI/GFCI) Plug-On Neutral Circuit Breaker

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**Shop now:** [https://www.desertcart.tw/products/91241449-siemens-rdh100-digital-thermostat](https://www.desertcart.tw/products/91241449-siemens-rdh100-digital-thermostat)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-07-22*