NEEWER 23.6"/600mm USB Lens Heater Warmer User Manual

1. Introduction

The NEEWER HW-23B USB Lens Heater Warmer is designed to prevent fog, dew, and condensation from forming on camera lenses, telescopes, and binoculars in cold or humid environments. This device ensures clear vision and optimal performance for your optical equipment during outdoor photography, astrophotography, or observation sessions. It features an upgraded heating element and three adjustable temperature settings for versatile use.

2. Important Safety Information

Please read and understand all safety instructions before using this product. Failure to follow these instructions may result in electric shock, fire, or serious injury.

• Do not immerse the lens heater in water or expose it to heavy rain.
• Ensure the USB power source is 5V and provides sufficient current (2A recommended) to avoid damage to the heater or power source.
• Do not use the product if the cable or heating element appears damaged.
• Keep out of reach of children.
• Avoid prolonged direct contact of the heating element with skin to prevent burns, especially at higher temperature settings.
• Unplug the heater from the power source when not in use or before cleaning.

3. Package Contents

Verify that all items listed below are included in your package:

• 1 x NEEWER USB Lens Heater Warmer (HW-23B)
• 1 x Storage Pouch
• 1 x User Manual

Image: The NEEWER HW-23B USB Lens Heater Warmer, its included storage pouch, and the user manual as they appear in the package.

4. Product Overview

The NEEWER HW-23B consists of a flexible heating strip with an integrated USB cable and an inline temperature controller. The heating strip is made of soft, durable material with touch fasteners for secure attachment.

Image: A full view of the NEEWER USB Lens Heater Warmer, displaying the long heating strip, the attached USB cable, and the compact inline controller with buttons.

Key Components:

• Heating Strip: The main component that generates warmth. Length: 23.6" (600mm) total, 20" (500mm) effective heating length.
• USB Cable: 4.9ft (1.5m) long for flexible power connection.
• Temperature Controller: Inline unit with power button and temperature mode selection.
• Touch Fasteners: For easy and secure attachment around lenses or telescopes.

5. Setup and Installation

Follow these steps to properly set up your lens heater:

1. Identify Compatibility: Ensure your lens, telescope, or binocular has a circumference of up to 18.7" (475mm) and a diameter of up to 150mm for optimal fit. The heater is recommended for lenses/telescopes up to 10.8" (275mm) in circumference and up to 86mm in diameter for a perfect fit.
   

   Image: The lens heater demonstrated on different lens sizes, highlighting its wide compatibility with various optical equipment.

2. Wrap the Heater: Gently wrap the heating strip around the barrel of your camera lens, telescope, or binocular. Position it close to the front element or where dew typically forms.
   

   Image: A camera lens with the NEEWER heater strip wrapped around it, secured by the touch fasteners, illustrating the quick installation process.
3. Secure with Fasteners: Use the integrated touch fasteners to secure the heater firmly but not overly tight around your equipment. Ensure the heating element is in good contact with the surface.
4. Connect Power: Plug the USB-A connector of the heater's cable into any standard 5V USB power source. This can be a portable power bank, a laptop's USB port, or a USB wall adapter. A 2A output is recommended for optimal performance.
   

   Image: The lens heater connected to a portable power bank, demonstrating its USB power compatibility with various 5V sources.

6. Operating Instructions

The NEEWER HW-23B features an easy-to-use inline controller with three temperature settings.

Image: The inline controller of the lens heater, detailing the power button and the three temperature selection buttons.

1. Power On/Off: Press and hold the power button (labeled "ON/OFF") on the inline controller for approximately 2-3 seconds to turn the heater on or off. An indicator light will illuminate when the device is active.
2. Select Temperature Mode: Once powered on, short press the respective buttons to cycle through the three temperature settings:
   • HIGH: 55-65°C (131-149°F) - For extremely cold or high humidity conditions.
   • MIDDLE (Medium): 45-55°C (113-131°F) - For moderately cold or humid conditions.
   • LOW: 35-45°C (95-113°F) - For mild cold or light dew prevention.
   The corresponding indicator light next to the selected mode will illuminate.
3. Continuous Operation: The heater is designed for continuous use as long as it is connected to a stable 5V USB power source.

7. Care and Maintenance

Proper care will extend the lifespan of your NEEWER USB Lens Heater Warmer.

• Cleaning: Disconnect the heater from the power source before cleaning. Wipe the surface with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Storage: When not in use, ensure the heater is completely cool and dry. Fold it neatly and store it in the provided storage pouch to protect it from dust and damage. Store in a cool, dry place.
  

  Image: The lens heater being stored in its dedicated pouch, demonstrating its portability and ease of storage.

• Handling: Avoid sharp bends or kinks in the heating strip and cable to prevent internal damage.

8. Troubleshooting

If you encounter issues with your lens heater, refer to the table below for common problems and solutions.

Image: A visual demonstration of the lens heater's effectiveness in preventing fog and dew, showing clear results compared to an untreated lens.

9. Product Specifications

10. Warranty and Support

NEEWER products are designed and manufactured to the highest quality standards. For information regarding warranty coverage, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official NEEWER website. You may also contact NEEWER customer service directly through the retailer where you purchased the product.

For the latest product information and support, please visit: www.neewer.com