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Dooya DM45R 20-25 Automatic Blind Opener Technical Specifications
The Dooya DM45R 20-25 is a high-torque 20 Nm AC tubular motor designed for 45mm roller blind tubes, operating at 25 RPM. This motor functions on a 220-240V AC 50Hz single-phase power supply and features a <40 dB noise rating for silent window automation.
Quick Answer
The Dooya DM45R 20-25 is a 20 Nm torque AC tubular motor specifically built for large roller blinds and 45mm tubes. It offers a 25 RPM opening speed, a mechanical life of 20,000 cycles, and carries an IP44 protection rating for moisture resistance, making it suitable for residential and commercial applications requiring silent operation below 40 dB.
✓20 Nm torque capacity for heavy roller and large venetian blinds
✓25 RPM operating speed for efficient opening and closing cycles
✓Silent operation verified at <40 dB noise levels
✓IP44 protection rating ensures resistance against moisture and dust
✓Manual bypass support for mechanical operation during power events
The Dooya DM45R 20-25 is a specialized AC tubular motor for users prioritizing mechanical lifting power (20 Nm) and silent operation (<40 dB) over smart home connectivity. It is a reliable choice for 45mm roller tubes where 220-240V AC power is available.
✓ Who Should Buy
- • performance suitable for residential spaces.
- •Verified efficiency of standard rating for reduced long-term operational costs.
- •Structural stability for consistent cleaning under rigorous use cases.
- •Hardware durability via premium components and advanced technology.
- •Built-in grid protection with Standard power cycle voltage management.
✕ Who Should Avoid
- •Spaces or usage requirements exceeding residential rated capacity.
- •Installations prioritizing minimum capital expenditure over high-efficiency performance.
- •Unstable grid conditions exceeding the functional threshold of Standard power cycle.
- •Environments incompatible with automatic curtain physical and thermal dissipation specs.
Product Overview
The Dooya DM45R 20-25 is an AC tubular motor engineered for 45mm diameter roller blind tubes, providing a high-torque output of 20 Nm. This motor operates at a consistent speed of 25 RPM, utilizing a 220-240V AC power source at 50 Hz. Designed for durability, the unit is rated for over 20,000 operating life cycles and includes a 6-minute continuous duty cycle to prevent thermal overload. The 45 mm diameter steel and plastic body is powder-coated for corrosion resistance, supported by an IP44 protection rating that allows for use in environments with 10% to 90% RH humidity levels. For control, the motor integrates RF433 protocols, enabling remote and switch operation, though it does not natively support WiFi or smartphone apps without external gateways. The DM45R 20-25 includes essential safety features such as surge, thermal, and short-circuit protection. Its manual override capability ensures functionality during power failures, while the energy-saving mode minimizes standby consumption. This motor is optimized for altitudes up to 2000m and maintains silent performance with noise emission levels staying under 40 dB, ensuring minimal acoustic disruption in residential settings.
| Brand | Dooya |
| Model | DM45R 20-25 |
| Type | automatic blind opener ac tubular motor for roller blinds |
| Color | White |
| Body Material | N/A |
| Finish | Powder-coated |
| Installation Type | tubular inside roller blind tube |
| Compatibility | N/A |
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Engineering Analysis
Engineering of the Dooya DM45R 20-25 focuses on mechanical robustness, evidenced by the 20 Nm torque rating and 25 RPM velocity. The 45mm tubular housing utilizes a combination of powder-coated steel and plastic to achieve an IP44 rating, protecting internal electronics from ingress. Electrical performance is stabilized through built-in overload, over-voltage, and thermal protection mechanisms that trigger after the 6-minute duty cycle limit is reached. The motor utilizes a single-phase AC configuration, ensuring high efficiency for heavy-load roller blinds without the need for external transformers. Data logging and IoT features are absent; however, the RF433 integration provides a response time of less than 1 second for remote commands. With a Mean Time Between Failures (MTBF) of 30,000 hours and a motor lifespan exceeding 10 years, the mechanical design prioritizes longevity over smart-connectivity features. The inclusion of a manual bypass and auto-stop functionality further ensures the 20,000-cycle durability rating by preventing physical strain during blockage or limit-setting.
Technical Support & FAQs
Engineering Analysis
Engineering of the Dooya DM45R 20-25 focuses on mechanical robustness, evidenced by the 20 Nm torque rating and 25 RPM velocity. The 45mm tubular housing utilizes a combination of powder-coated steel and plastic to achieve an IP44 rating, protecting internal electronics from ingress. Electrical performance is stabilized through built-in overload, over-voltage, and thermal protection mechanisms that trigger after the 6-minute duty cycle limit is reached. The motor utilizes a single-phase AC configuration, ensuring high efficiency for heavy-load roller blinds without the need for external transformers. Data logging and IoT features are absent; however, the RF433 integration provides a response time of less than 1 second for remote commands. With a Mean Time Between Failures (MTBF) of 30,000 hours and a motor lifespan exceeding 10 years, the mechanical design prioritizes longevity over smart-connectivity features. The inclusion of a manual bypass and auto-stop functionality further ensures the 20,000-cycle durability rating by preventing physical strain during blockage or limit-setting.