Introduction
Thank you for choosing the Oraimo Space Heater OSH-511A. This 1500W portable electric heater is designed for indoor use, providing efficient and quiet heating for your home or office. Featuring 70° oscillation, a 12-hour timer, and PTC ceramic fast heating technology, it ensures a comfortable environment. This manual provides essential information for safe operation, maintenance, and troubleshooting.

Image: The Oraimo Space Heater OSH-511A positioned in a living room, emitting warmth towards a couple seated on a sofa, illustrating its rapid heating capability.
Setup
- Unboxing: Carefully remove the heater and all accessories from the packaging. Verify that all components, including the heater unit, remote control, and user manual, are present.
- Placement: Place the heater on a firm, level surface. Ensure it is positioned at least 3 feet (0.9 meters) away from any walls, furniture, curtains, or other combustible materials. Do not block air intake or exhaust vents.
- Power Connection: Plug the heater directly into a 110V AC wall outlet. Avoid using extension cords or power strips, as these may overheat and pose a fire hazard. The heater operates at 12.5 Amps.
- Remote Control Activation: The remote control comes with a pre-installed battery. Remove any plastic tab from the battery compartment to activate it before first use.

Image: A person unboxing the Oraimo Space Heater OSH-511A, revealing the heater unit, remote control, and user manual, highlighting the initial setup components.
Setup Overview Video
Video: An official overview of the Oraimo Space Heater OSH-511A, demonstrating its quiet operation and 12-hour timer feature.
Operating Instructions
- Power On/Off: Press the power button on the top control panel or the remote control to turn the heater on or off.
- Temperature Setting: Use the '+' and '-' buttons on the control panel or remote to adjust the desired temperature between 60°F and 85°F. The heater will maintain the set temperature.
- Heating Modes: Cycle through available heating modes (High, Low, ECO) using the mode button.
- High (1500W): Provides maximum heat output for rapid warming.
- Low (900W): Offers a lower heat output for sustained warmth.
- ECO Mode: Automatically adjusts heat output to maintain the set temperature efficiently, saving energy.
- Oscillation: Press the oscillation button to activate 70° widespread oscillation, distributing heat evenly across the room. Press again to stop.
- Timer: Use the timer button to set an auto-off timer from 1 to 12 hours. The heater will automatically turn off after the set duration.
- Sleep Mode: Activate sleep mode to turn off the LED display, ensuring an undisturbed sleeping environment.
- Night Light: The heater features a night light that can be toggled on or off via the control panel or remote.

Image: A detailed view of the Oraimo Space Heater OSH-511A's easy-to-use control panel, showing icons for various functions including 70° oscillating, 3 modes, thermostat, 12-hour timer, and sleep mode.
Safety Features
The Oraimo Space Heater OSH-511A is equipped with multiple safety features to ensure safe operation:
- Tip-Over Protection: The heater will automatically shut off if it is accidentally knocked over or tilted.
- Overheat Protection: If the internal components reach an unsafe temperature, the heater will automatically power off to prevent overheating.
- V-0 Flame Retardant Material: Constructed with fire-resistant materials for enhanced safety.
- ETL Certified: The product has undergone rigorous testing and meets recognized safety standards.
- Enhanced Safety Plug: Designed for secure and reliable power connection.
- 24-Hour Auto Power Off: For added safety, the heater will automatically turn off after 24 hours of continuous operation.

Image: The Oraimo Space Heater OSH-511A is shown with icons highlighting its multiple safety features, including tip-over protection, overheating protection, V-0 flame retardant materials, and ETL certification.
Maintenance
- Cleaning: Always unplug the heater before cleaning. Use a soft, damp cloth to wipe the exterior. Do not use abrasive cleaners or immerse the heater in water. Regularly clean the air intake filter to ensure optimal performance.
- Storage: When not in use, store the heater in a cool, dry place, preferably in its original packaging, away from direct sunlight and moisture.
Troubleshooting
- Heater does not turn on: Check if the power cord is securely plugged into a working outlet. Ensure the power button is pressed. Verify that the tip-over switch on the bottom of the unit is not activated (heater is on a flat surface).
- Heater stops heating unexpectedly: This may be due to the overheat protection or tip-over protection being activated. Allow the unit to cool down and ensure it is on a stable surface.
- Insufficient heat output: Check the selected heating mode (High, Low, ECO) and adjust the temperature setting. Ensure air intake and exhaust vents are not blocked.
- Unusual noise: If you hear unusual noises, turn off the heater immediately and unplug it. Contact customer support for assistance.
Specifications
| Feature | Detail |
|---|---|
| Brand | Oraimo |
| Model Number | OSH-511A |
| Heat Output | 1500 Watts |
| Voltage | 110 Volts |
| Amperage | 12.5 Amps |
| Min Temperature Setting | 60 Degrees Fahrenheit |
| Max Temperature Setting | 85 Degrees Fahrenheit |
| Oscillation | 70° Widespread |
| Timer | 12 Hours |
| Noise Level | 25dB (Quiet Heating) |
| Product Dimensions | 6.3 x 6.3 x 16 inches |
| Item Weight | 5.46 pounds |
| Special Features | On Off Timer, Oscillating, ECO Mode, Sleep Mode, Night Light |
Warranty and Support
The Oraimo Space Heater OSH-511A comes with an extended 2-year warranty service. For any product inquiries, technical support, or warranty claims, please refer to the contact information provided in your user manual or visit the official Oraimo website.