0 ratings
Item #:
232581908
Household Thermostat, Premium Heat Pump Room Temperature Controller, Up to 2H/1C, Large Easy-to-Read Display, Blue Backlight
Item #:
232581908
SCR 889
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from JP
In stock
Imported from Japan store
QTY:
Only 5 items left in stock.
This product is not Fulfilled by Ubuy and can take minimum 10 days in delivery. We might cancel the product from the order and refund you if any issue arise with the delivery of this product.
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Easy to install and use with a user-friendly experience that optimizes your heating system's performance.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of JAPAN store (100 V). Recommended power converters Buy Now.
Product Details
| Controller Type | Push Button |
| Additional Features | Battery Operated or Wired |
| Specific Uses For Product | Control heating and cooling |
| Temperature Control Type | Traditional Single Stage System |
| Power Source | Battery Operated or Wired |
| Voltage | 24 Volts (AC) |
| Display Type | LCD |
| Control Type | Button Control |
| Control Method | Touch |
| Mounting Type | Wall Mount |
| Number of Batteries | 2 AA batteries required. |
| Color | blue |
| Shape | Rectangular |
| Product Style | Digital |
| Brand Name | Coiiwsei |
| Model Name | RTH721-Blue |
| Included Components | 1 Thermostat, 1 Screw Set, 1 Manual, 1 Wall Plate, 1 Wiring Label |
| Model Number | RTH721-Blue |
| Manufacturer | Coiiwsei |
| Number of Items | 5 |
| Item Dimensions D x W x H | 2.6D x 12.7W x 9.7H cm |
| Item Weight | 0.4 Pounds (180 grams) |
| Material Type | Plastic |
| Brand | Coiiwsei |
| Product Dimensions (L x W x H) | 1.0218 x 4.9911 x 3.8121 inches (2.6 x 12.7 x 9.7 cm) |
| Special Feature | Battery Operated or Wired |
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
Is this thermostat compatible with my heating system?
Answer: Check if your system is a heat pump, electric furnace, or conventional forced air system. It is not compatible with two transformer systems or dual fuel systems. -
Question:
How long does installation take?
Answer: Installation typically takes about 30 minutes. -
Question:
What kind of support is available for this product?
Answer: Customer service is available 24/7 for any questions or support you may need.
Coiiwsei RTH721-Blue Editorial Review
Household Thermostat, Premium Heat Pump Room Temperature Controller, Up to 2H/1C, Large Easy-to-Read Display, Blue Backlight offers a straightforward solution for maintaining your preferred indoor climate. Designed for both battery-operated and wired setups, its traditional single-stage system makes it versatile for different home heating and cooling needs. With a large LCD display featuring a blue backlight, users find it easy to read even from a distance. This thermostat is wall-mounted and operates with a simple push-button control, ensuring seamless operation. Additionally, the product is lightweight and comes complete with all necessary installation components, making setup a breeze.
Customer Reviews & Ratings
53 customers ratings
-
5 Star
70%
-
4 Star
8%
-
3 Star
11%
-
2 Star
3%
-
1 Star
8%
Review this product
Share your thoughts with other customers
Pros
- Large easy-to-read LCD display
- Battery operated or wired options
- Simple push button controls
- Versatile for heating and cooling
- Includes all installation components
Cons
- Might require occasional battery changes
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
SCR 889
This product is not Fulfilled by Ubuy and can take minimum 10 days in delivery. We might cancel the product from the order and refund you if any issue arise with the delivery of this product.
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Only 5 items left in stock.
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- High compatibility with various heating systems, including heat pumps and electric furnaces.
- Not compatible with multi-stage systems, dual fuel systems, or electric baseboard heat.
- Installation takes only 30 minutes with universal sub-base and large terminal blocks.
- User-friendly design includes a clear backlight LCD display and easy controls.
- Features adjustable temperature differential for energy optimization.
- Reliable product backed by over 20 years of manufacturer experience and 24/7 customer service.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.