Finding a sliding-door dog door with a sensor takes a little care: some products open automatically for a pet wearing a special collar, while others are simple inserts with a magnetic flap and no sensor. The options below include both types. If automatic, pet-only access is your priority, start with the High Tech Pet models. If you want a simpler sliding-door insert, the last two options may be a better fit—but they do not include a sensor.
Table of Contents
Quick Comparison
| Product | Access type | Size or height details | Best for |
|---|---|---|---|
| High Tech Pet Power Pet Smart Door, Medium WiFi | Automatic; MS-5 collar required | Patio Regular, 75–80¼ inches; Medium | Medium pets and owners who want WiFi |
| High Tech Pet Power Pet Smart Door, Large Non-WiFi | Automatic; MS-5 collar required | Patio Regular, 75–80¼ inches; Large | Large pets and owners who do not need WiFi |
| High Tech Pet Power Pet Smart Door, Large WiFi | Automatic; MS-5 collar required | Patio Regular, 75–80¼ inches; Large | Large pets and owners who want WiFi features |
| YGNNJY Sliding Door Dog Door with Screen | Manual magnetic flap; no sensor listed | Adjusts from 75⅘ to 80⅗ inches | Large dogs and warm-weather airflow |
| FurrFinesse Sliding Glass Door Dog Door | Manual magnetic flap; no sensor listed | Adjusts from 75⅗ to 80 inches; Medium | Smaller pets and no-cut installation |
Our Picks: Best Sliding Door Dog Door Insert With Sensor reviews
1. High Tech Pet Power Pet Smart Door: Medium WiFi Model
This is the most direct match for a sensor-operated pet door in a patio-door size. It uses an ultrasonic MS-5 collar to trigger the door, so your pet does not have to push through a flap. The listing describes a Patio Regular version for openings between 75 and 80¼ inches and a Medium pet-door size.
Directional sensing is designed to open the door when a pet approaches directly, rather than when it is resting nearby. The door also has in-only, out-only, in-and-out, and locked modes. A steel dead bolt, an obstruction-sensing safety feature, and a sealed panel add useful security and weather protection. The included collar is water-resistant, and the door can run from its AC adapter; a rechargeable backup battery is optional.
The main point to check is installation. The product information says it fits door or wall mounts, but shoppers should confirm that the specific Patio Regular configuration includes the insert or mounting parts needed for their sliding-door setup. It is also not a collar-free system: the door is designed for genuine High Tech Pet MS-5 transmitters, and the performance warranty applies when authentic transmitters are used. WiFi is a useful distinction from the non-WiFi model, but confirm the connected features you need before choosing.
Pros:
- Automatic access triggered by the included MS-5 collar
- Directional sensing helps limit unwanted openings
- Multiple access modes and an automatic steel dead bolt
- WiFi version for shoppers seeking connected features
Cons:
- Requires a compatible genuine MS-5 collar and transmitter
- Confirm the mounting configuration works with your sliding door
Verdict: Choose this Medium WiFi model if your pet fits the medium size and you want collar-triggered access, but verify the mounting kit and opening measurements before ordering.
2. High Tech Pet Power Pet Smart Door: Large Non-WiFi Model
This Large version offers the same collar-activated operation as the Medium model, but is listed for large pets and does not include WiFi. The patio-height range is 75 to 80¼ inches. Like the other Power Pet options, it is designed to open for a pet wearing a genuine MS-5 ultrasonic collar rather than relying on a pet to move a flap.
Its access controls let you select in-only, out-only, in-and-out, or locked operation. Directional sensing, a steel dead bolt, and an anti-pinch safety system are also included. The panel is described as weather-proof and sealed against drafts, while the door can use the included AC adapter or an optional rechargeable backup battery.
This model is a sensible choice if you want the larger door size and do not need WiFi. The trade-off is that it offers fewer connected options than the WiFi version. As with the other electronic models, check what mounting hardware is included and whether it suits your patio door; do not assume that a patio-height listing alone guarantees a drop-in fit for every sliding door.
Pros:
- Large pet-door size with collar-triggered operation
- Several access modes for managing when pets can pass
- Steel dead bolt and obstruction response add security and safety features
- AC power is included, with optional battery backup
Cons:
- No WiFi connection
- Requires a genuine MS-5 collar; mounting compatibility should be checked
Verdict: Pick this version if you need the Large size and prefer a simpler non-WiFi setup, provided the mounting arrangement matches your door.
3. High Tech Pet Power Pet Smart Door: Large WiFi Model
This Large WiFi model combines the collar-triggered design with connected functionality. It is intended for large pets and has the same stated Patio Regular height range of 75 to 80¼ inches. The MS-5 collar signals the door, while directional sensing aims to prevent it from opening just because a pet is nearby.
Like the non-WiFi Large model, it offers four access modes, a steel dead bolt, and an obstruction-sensing safety system. The sealed panel is intended to help keep out wind, rain, and drafts. Power comes from the included AC adapter, with an optional rechargeable battery available for backup.
The main decision is whether WiFi is worth choosing over the non-WiFi Large version. The core door and collar requirements are similar, so the connected option makes most sense if you plan to use its WiFi features. Product details provided here do not specify exactly which app controls are available, so check the current listing for those details. Also confirm the mounting parts and opening fit for your particular sliding door.
Pros:
- Large size with automatic MS-5 collar activation
- WiFi-enabled option for connected use
- Directional sensing and selectable access modes
- Dead bolt, obstruction safety, and sealed panel
Cons:
- Requires a genuine MS-5 collar and compatible batteries
- WiFi features and mounting compatibility should be confirmed before purchase
Verdict: This is the best fit among these options if you need a Large sensor-operated door and want WiFi, as long as the installation setup is compatible with your patio door.
4. YGNNJY Sliding Door Dog Door with Screen for Large Dogs
Unlike the High Tech Pet doors, this is a sliding-door insert with a manual magnetic flap—not a sensor-operated door. Its main draw is the combination of a pet passage and a screen section intended to let air circulate while helping keep insects out. The aluminum frame is adjustable from 75⅘ to 80⅗ inches, according to the product details.
The listing describes this as an X-Large option for large dogs and states a maximum weight capacity of 200 pounds. That figure is a product claim, not a substitute for checking the flap opening against your dog’s height and width. The magnetic flap is intended to close after your pet passes, and the insert is described as having a locking mechanism.
Some users report that assembly and placement are straightforward, while fit and locking arrangements can be less simple with certain sliding-door designs. In particular, check how the insert will sit beside your existing door and whether its latch will work with your door hardware. The screen design can be useful in warm weather, but this is not the right pick if you need collar recognition or automatic opening for pet-only access.
Pros:
- Adjustable height for the stated patio-door range
- Screen section supports airflow in warmer weather
- Aluminum frame and magnetic flap
- Designed for large pets
Cons:
- No electronic sensor or collar-based access
- Locking and fit may depend on your sliding-door hardware
Verdict: Choose this insert if you want a large manual flap and screened airflow; skip it if sensor-controlled access is a must-have.
5. FurrFinesse Sliding Glass Door Dog Door with Screen
The FurrFinesse is another manual sliding-glass-door insert, so it does not have a sensor. It has an aluminum frame, a magnetic flap, and a screen section designed to allow airflow. The product listing gives an adjustable height range of 75⅗ to 80 inches and labels this version Medium, with a stated maximum pet weight of 30 pounds.
The no-cut installation is a key selling point for renters or anyone who does not want to alter a door. The product is described as fitting into a sliding-door opening without cutting or complex tools. Still, you should measure the track height and check the available space around the door before buying. The stated fit range does not confirm compatibility with every door frame or locking setup.
This insert may suit a smaller dog or cat if you want a basic flap and a screen for warmer weather. It is less suitable for shoppers looking for a sensor, an automatic lock, or access that is restricted to a pet wearing a collar. Compared with the YGNNJY option, it is listed for a smaller pet size and lower weight capacity.
Pros:
- No-cut installation is designed for a simple setup
- Adjustable height for the stated range
- Aluminum frame with a magnetic flap
- Screen design supports warm-weather airflow
Cons:
- No sensor or automatic pet recognition
- Medium size and stated 30-pound capacity limit its suitability for larger dogs
Verdict: Consider this insert for a smaller pet and a straightforward, no-cut setup, but choose one of the Power Pet models if sensor-based access matters more than simplicity.
How to Choose a Sliding Door Dog Door with a Sensor
Decide whether you need a sensor or a basic flap
A sensor-operated door uses a collar transmitter to trigger opening, while a standard insert uses a flap your pet pushes through. The High Tech Pet options require a genuine MS-5 ultrasonic collar. The YGNNJY and FurrFinesse inserts have magnetic flaps, but the supplied details do not list sensors. Decide which type you need before comparing other features.
Measure the opening and check the mounting style
Measure the height of your sliding-door track and compare it with the product’s adjustment range. The three Power Pet models list a Patio Regular height of 75 to 80¼ inches; the YGNNJY lists 75⅘ to 80⅗ inches; and the FurrFinesse lists 75⅗ to 80 inches. Height alone does not confirm a fit. Check the width, mounting parts, door configuration, and whether the insert works with your existing lock.
Choose a size your pet can use comfortably
Look beyond labels such as Medium, Large, or X-Large. Measure your pet’s height and width, then compare those measurements with the actual passage dimensions in the product listing. The supplied data gives size labels for the Power Pet models and weight-capacity claims for the two manual inserts, but it does not provide the exact flap opening dimensions for every option.
Think about access control and household safety
A collar-triggered door can limit opening to a pet wearing the compatible transmitter. The Power Pet models also list in-only, out-only, in-and-out, and locked modes, along with a steel dead bolt and an obstruction safety feature. A manual magnetic flap is simpler, but it does not offer the same collar-based control. Consider who else could use the opening and how you plan to secure the sliding door.
Consider weather, airflow, and power
The Power Pet doors are described as having a sealed panel to help block wind, rain, and drafts. The two manual inserts include a screen design intended to improve airflow in warm weather. The electronic models use an included AC adapter, and an optional rechargeable battery is available for backup. Choose based on your climate, ventilation needs, and access to an outlet.
Compare WiFi options and collar requirements
Two of the Power Pet choices are WiFi-enabled, while the Large model in the comparison is non-WiFi. The supplied information does not detail every connected function, so check the product listing if a specific app feature matters to you. All three electronic options are designed for genuine MS-5 collars, and the product information ties the performance warranty to authentic transmitters.
Frequently Asked Questions
Which option in this list has a sensor?
The three High Tech Pet Power Pet models use an MS-5 ultrasonic collar to trigger the door. The YGNNJY and FurrFinesse products are manual magnetic-flap inserts, and their supplied details do not list a sensor.
Do the High Tech Pet models fit every sliding glass door?
No universal fit is stated. They list a Patio Regular height range of 75 to 80¼ inches and say they fit door or wall mounts. Check the exact mounting configuration and your door measurements before ordering.
Do I need a special collar for a Power Pet door?
Yes. The product information says these doors are designed for genuine High Tech Pet MS-5 ultrasonic collars. It also states that the performance warranty applies when authentic MS-5 transmitters are used.
What is the difference between the WiFi and non-WiFi Power Pet models?
The Medium model and one Large model are listed as WiFi-enabled; the other Large model is non-WiFi. The supplied product details do not explain every connected feature, so check the listing for the functions you want.
Are the YGNNJY and FurrFinesse doors automatic?
No. Both are described as sliding-door inserts with magnetic flaps. The information provided does not list collar sensors or automatic opening for either one.
Can I use one of these inserts in a rental?
The FurrFinesse product is specifically described as a no-cut installation, which may appeal to renters. Always check the fitting method and any lease requirements first. The other products’ mounting details should also be reviewed before installation.
Final Recommendation
For sensor-based access, the High Tech Pet Power Pet models are the strongest matches in this group because they open for a compatible MS-5 collar and include access-control features. Choose the Medium WiFi version for a medium-size pet, or compare the two Large versions based on whether you want WiFi. If you want a simpler sliding-door insert with a screen, consider YGNNJY for a larger pet or FurrFinesse for a smaller one—but neither is a sensor-operated door. In every case, confirm your pet’s passage needs, door measurements, and mounting compatibility before buying.
