The Best Long Range Ultrasonic Sensor

From the Manufacturer

Designed to meet consumer demands for a fast EF-S zoom lens, the EF-S 17-55mm offers image quality on par with Canon’s highly regarded L-series lenses. The lens features a large circular aperture that produces a shallow depth of field, creating background blur that draws special attention to the photographic subject. The lens construction, meanwhile, includes UD and aspherical elements that deliver impressive image quality throughout the entire zoom range. And thanks to the Image Stabilizer lens groups–which shift to compensate for camera shake–the image appears crisp and clear on the image plane, eve in dim light. Finally, the lens offers a ring-type ultra-sonic monitor (USM), inner focusing, and new AF algorithms to help achieve autofocus quickly and quietly, along with full-time mechanical manual focusing that makes it possible to manually adjust the focus even in AF mode. As with all Canon lenses, this lens carries a one-year warranty.

• Focal length: 17-55mm
• Maximum aperture: f/2.8
• Lens construction: 19 elements in 12 groups
• Diagonal angle of view: 78 degrees (at 30 feet) to 27 degrees (at 50 feet)
• Focus adjustment: AF with full-time manual
• Closest focusing distance: 1.15 feet
• Zoom system: 5-group helical zoom (front group moves 27mm)
• Filter size: 77mm
• Dimensions: 3.3 inches in diameter, 4.4 inches long
• Weight: 22.8 ounces

The EF-S 17-55mm f2.8 IS USM offers image quality on a par with Canon’s highly regarded L-series lenses. It has a large maximum aperture which, combined with higher shutter speeds, can minimize subject motion blur. Shallow depth-of-field separation of a subject from its background is much easier to achieve and the f2.8 maximum aperture allows a bright finder and extremely precise focusing with f2.8 compatible AF sensors. The internal stabilization has a sharpness benefit equivalent to a three-stop faster shutter speed, making this lens outstanding in low-light situations. Smaller and lighter than lenses of similar specifications, the EF-S 17-55 mm f2.8 IS USM lens has a 35mm equivalent focal length of 27-88mm and is compatible only with the EOS 30D, EOS 20D, EOS Digital Rebel XT, and EOS Digital Rebel SLRs. To meet user demands for a fast EF-S zoom lens, Canon has specially designed a new lens with a large aperture of f/2.8 for select Canon Digital SLR cameras. The large circular aperture produces a shallow depth-of-field, creating background blur that draws attention to the photographic subject. The lens construction includes UD and aspherical elements, which deliver impressive image quality throughout the entire zoom range. Image Stabilizer lens groups shift to compensate for camera movement so that the image appears steady on the image plane, ensuring clear, crisp images, even in dim light. With a Ring-type USM, inner focusing and new AF algorithms, this lens achieves autofocus quickly and quietly, and with full-time mechanical manual focusing, manually adjusting the focus is possible even in AF mode.

The BISSELL air320 Air Purifier is part of the BISSELL lineup of premium lifestyle air purifiers that join form and function in your home. The air320 is designed with clean lines, smooth edges, midcentury modern legs, a discreet cord wrap, and a fabric filter that fit into the design of almost any home. Under the unique design is a powerful machine you’d expect from BISSELL – a trusted brand in homecare. The washable fabric pre-filter on the front of the machine is part of this air purifier’s 3 stage filtration that also includes a pleated high efficiency filter to capture hair, dust, pollen, and dander and an activated carbon filter to capture home odors, pet odors, and volatile organic compounds. The air320 is controlled by a soft-touch dial that allows uses to adjust the fan speed. The air320 can accommodate large rooms like bedrooms, living area, basements, and dining rooms. It is able to clean the air in an 1000 sq. ft. room once every hour. You’ve trusted BISSELL to clean and care for the floors and surfaces in your home. Now, let us clean your air!

When it comes to dog bark control, ultrasonic bark control devices are one of the most popular methods of getting a dog’s immediate attention when excessive barking is causing a problem – causing an instant disruption to the barking behavior.

This MODUS ultrasonic bark control device is a handheld ultrasonic unit that is small and light enough to take on your walks, as well as using it around the home. MOUDS anti-barking device combines bark control and training functions, so it’s also ideal as a training tool for your own dog’s training as part of a positive reinforcement training program. Such as barking, digging, chewing and more, also they are harmless to both humans and pets. 

When using this product, it is best to feed the dog first, comb its hair, play with the dog, etc., and try to establish a connection with the dog in the early stage. Obtain its trust, and then use the training device when the dog has bad behaving. Otherwise, the dog may ignore the owner for a few days, or even bully the owner and not achieve the ideal training effect. The sound waves have a very safe tone and have been tested time and time again by experience professionals, vets and law enforcement offices. 

Note: 
1. The product may not be effective on dogs with hearing problems. 
2. The product cannot be used for dogs under six months. 
3. This device is not intended to provide protection against aggressive dogs. 
4. Do not use the device against your ear for testing. 
5. Different dog breeds may react to the ultrasonic sound differently. 
6. For optimal results, please use the product as a training aid, along with other tools/commands. Be patient during this training process. 

If you’re at a loss as to what to do about your barking dogs, choose our MODUS bark control device, you can enjoy chatting with your friends while your dog is playing around.

Who we are? What we care about?
As a pet-loving company, Modus has been designing and developing pet-friendly devices for years, including different types of barking control devices, anti pulling devices, dog training remote & e-collar. We aim to help pet owners to control unwanted barking and stop dogs’ bad behaviors. More importantly, we care about not only the effective level, but your puppies’ feeling that all our product are set a safe and effective level.

What is special about Modus anti bark device?
Our Modus anti bark device uses latest ultrasonic technology. The average human hearing frequency range is between 20HZ and 20KHZ, and dogs can hear a wider range from 15HZ to 120KHZ. Because of the unique frequency, the sound is not audible to human, but can easily grab the dogs’ attention. The sound emitted is intended to be loud and distract dog’s current state of mind, which is safe to be used to stop the dogs’ bad behaviors and to get rid of unwanted barking.

When your dogs barks or makes mischief, simply press and hold down the button to takes the dog’s focus off, we suggest you pay closely attention to a change in barking or a change in behavior, then you can reward him for the desired action to actively guide and strengthen his memory. The dog will eventually learn to associate the barking with the ultrasound, form a conditioned reflex and stop bad behaviors.

Note:
1. The product may not be effective on dogs with hearing problems.
2. We do not recommend it for use on dogs under 6 months.
3. This device is not intended to provide protection against aggressive dogs.
4. In order to achieve long-lasting result, please be patient and consistently use the product as a training aid, along with commands and positive reinforcement.

Levoit LifeStyle

Love fresh air? Bring it inside—whether in your living room, atop a small nightstand, or right next to you at your work, let the LEVOIT LV-H132 Air Purifier do its work. Choose from low, medium, or high fan speed settings. Three stages of filtration (Fine Preliminary, True HEPA, Activated Carbon filters) tackle 99.97% of particles and odors. Enjoy a cleaned-up breathing space all around it. And sit back knowing there’s a 2-year warranty that comes with lifetime support from Levoit customer service.

What’s in the Box:

1 x True HEPA Air Purifier

1 x Fine Preliminary Filter

1 x True HEPA/Activated Carbon filter

1 x User Manual

Note:

1.Power Supply (only): AC 120V / 60 Hz. (A voltage converter is needed to transfer the power supply to US use first if you want to use this air purifier beyond the US.)

2.Please check the filter’s color to relieve your concern on whether the device is purifying the air.

3. To be Ozone-free, this Levoit Air Purifier is NOT AN IONIZER and does NOT USE UV-C LIGHT. Ionic air purifier emits negatively charged ions into the atmosphere of a room. As a result, a small amount of ozone is produced. UV-C light systems will produce “photolytic” ozone when UV-C hits oxygen (O2) molecules. Ozone is an important part of the atmosphere, but ozone is harmful for the lungs at ground level.

4. Always allow 15 in. (38 cm) of clearance on all sides of the purifier.