1. Doorbells Offered
  2. sku: 16179145998083663
  3. DOOR M520

DOOR Chime Wireless Contact Sensor Alarm M520 744110291605 Doors Co. Ltd. 500-FT 58

Co. Ltd. 744110291605 Door Chime Wireless Open Contact Sensor Alarm With 500 Ft Range 58 Chimes

( Brand: Door ), ( Part Type: Chime Contact Sensor Alarm ), ( Unit Count: 1.0 Count ), ( Style: 1 Sensor 1 Receiver ), ( Mfr Part Number: M520 D015-w ), ( Mounting Type: Door Mount ), ( Power Source: Battery Powered ), ( Number Of Batteries: 1 Aaa Batteries Required. ), ( Color: White ), ( Sensor Technology: Contact Sensor ), ( Control Method: App ), ( Compatible Devices: Door Sensors ), ( Item Weight: 0.15 Kilograms ), ( Audible Noise: 120 Decibels ), ( Built-in Media: 1 Transmitter, 1 Plug-in Receiver, 1 Adh ), ( Battery Description: Alkaline ), ( Item Type Name: Door Chime ), ( Maximum Range: 500 Feet ), ( UPC: 744110291605 )

Review DOOR Co. Ltd. Chime Wireless Open Contact Sensor Alarm 500 Ft Range 58 Chimes

The **LTDI 744110291605 Wireless Door Chime and Contact Sensor Alarm System** is a sophisticated, long-range security solution designed to enhance home safety and convenience with its advanced wireless technology and customizable alert options. This state-of-the-art system combines a high-performance wireless contact sensor with a versatile door chime that supports an impressive **500-foot range**, ensuring seamless connectivity even in large homes or multi-level properties. The contact sensor features a durable, weather-resistant design, allowing for easy installation on doors, windows, or cabinets, while its low-profile magnetic switch provides reliable detection without obstructing sightlines. When triggered, the sensor instantly communicates with the wireless chime, which boasts **58 distinct chime tones**, offering a wide array of melodic or alert sounds to suit any preference from soft, soothing melodies to sharp, attention-grabbing alerts. This flexibility makes it ideal for families, pet owners, or anyone seeking both functionality and aesthetic appeal. The system s wireless nature eliminates the need for complex wiring, reducing installation time and potential damage to walls or structures. Additionally, its compact and unobtrusive design ensures it blends seamlessly into any d cor while maintaining a sleek, modern look. Whether used as a standalone doorbell replacement or integrated into a broader home security setup, this chime and sensor combo delivers unmatched versatility, reliability, and peace of mind, making it a standout choice for those who demand both innovation and ease of use in their smart home solutions.

### **Pros and Cons of buying a LTDI 744110291605 Wireless Door Chime with Contact Sensor and Alarm (500 ft Range, 58 Chimes)**

#### **Pros:**

1. **Long Wireless Range (500 ft)** Ideal for large homes, garages, or properties where wired systems are impractical. The extended range reduces the need for repeaters or signal boosters in most cases.

2. **Multiple Chime Options (58 Chimes)** Provides a wide variety of sound choices, allowing customization to match personal preferences or different room functions (e.g., gentle chimes for doors, louder alerts for alarms).

3. **Wireless Contact Sensor & Alarm Function** The inclusion of a contact sensor means it can act as a basic security alert (e.g., door/window opening triggers a chime or alarm). This adds a layer of convenience and passive security without requiring a full home security system.

4. **Easy Installation** Wireless systems eliminate the need for complex wiring, making setup straightforward. Most models come with adhesive pads or screws for mounting sensors and chimes.

5. **Battery-Powered** No dependency on electrical outlets, reducing installation hassle and allowing flexibility in placement (e.g., outdoor sensors, remote locations).

6. **Scalability** Additional sensors and chimes can often be added later, expanding functionality as needed (e.g., adding sensors to multiple doors or windows).

7. **Aesthetic Flexibility** Wireless chimes and sensors can be placed discreetly, avoiding the clutter of wired systems. Some models are designed to blend into home decor.

8. **Low Maintenance** Once installed, the system requires minimal upkeep, primarily involving battery replacements (typically every 1 2 years for sensors/chimes).

9. **Versatile Use Cases**

- **Home Security:** Acts as a deterrent or alert for unauthorized entry.

- **Pet Monitoring:** Can notify when pets exit or enter specific areas.

- **Child Safety:** Alerts when a child opens a door or window.

- **Convenience:** Reminds occupants when doors/windows are left open (e.g., during storms).

10. **No Tools Required for Basic Setup** Many wireless systems can be paired with a simple press of a button, making them accessible for DIYers.

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#### **Cons:**

1. **Battery Dependency** Reliance on batteries means occasional replacements are necessary. Forgetting to change batteries can lead to false security or missed alerts. Some models may require frequent replacements if used heavily.

2. **Limited Range in Obstructed Areas** While 500 ft is impressive, walls, floors, and electronic interference (e.g., microwaves, Wi-Fi routers) can reduce effective range. Testing in your specific environment is advisable.

3. **False Alarms** If not properly calibrated, sensors may trigger accidentally due to vibrations, drafts, or improper sealing. This can lead to desensitization over time.

4. **No Professional Monitoring** Unlike smart home security systems (e.g., ADT, SimpliSafe), this system cannot alert authorities or monitoring services. It s a passive alert system only.

5. **Limited Advanced Features** Compared to smart home ecosystems (e.g., Alexa, Google Home, or Ring), this system lacks integration with voice control, mobile apps, or automation triggers. You won t be able to receive alerts on your phone or control it remotely.

6. **Sensor Placement Challenges** Contact sensors must be installed precisely to avoid gaps or misalignment, which could lead to missed detections. Improper placement can also cause false triggers.

7. **Potential for Signal Interference** Other wireless devices (e.g., baby monitors, garage door openers) operating on similar frequencies could cause interference, though 58 chimes suggests a dedicated frequency band.

8. **Durability Concerns** Outdoor or high-traffic areas may expose sensors or chimes to wear and tear (e.g., weather, pets, or accidental damage). Ensure the model is rated for your environment.

9. **No Two-Way Communication** Unlike smart sensors, you cannot check the status of doors/windows remotely or receive real-time notifications on your phone.

10. **Cost of Expansion** While the initial purchase may be affordable, adding multiple sensors or chimes could increase costs, especially if you need a larger system.

11. **Learning Curve for Customization** Selecting the right chime tones and configuring sensors may require trial and error, especially for users unfamiliar with such systems.

12. **No Built-In Recording or Evidence Capture** Unlike security cameras, this system cannot record events or provide evidence of intrusions.

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### **Conclusion:**

The **LTDI 744110291605 wireless door chime with contact sensor and alarm** is a practical and convenient choice for users seeking a **simple, wireless, and customizable** alert system. Its **long range, multiple chime options, and basic security functionality** make it suitable for **homeowners, pet owners, or families** looking to enhance safety and convenience without complex installations. However, it is **not a substitute for a full security system** and lacks advanced features like remote monitoring or smart home integration.

This system excels in **ease of use, scalability, and versatility** for basic needs but may fall short for users who require **professional monitoring, mobile alerts, or video evidence**. If your primary goals are **passive alerts, door/window monitoring, or a simple chime system**, this product delivers strong value. For those needing **smart home integration or professional security**, additional systems would be necessary.

---

### **Recommendation:** **Buy this product if:**

- You want a **wireless, easy-to-install** door chime and sensor system.

- You need **long-range coverage (500 ft)** for large properties.

- You prefer **customizable chime tones** for different alerts.

- You seek a **basic security deterrent** without professional monitoring.

- You dislike wiring and want a **battery-powered, plug-and-play** solution.

- You re on a **budget** but still want functionality beyond a simple chime.

**Avoid this product if:**

- You need **remote monitoring, mobile alerts, or video surveillance**.

- You require **integration with smart home assistants (Alexa, Google Home)**.

- Your environment has **significant wireless interference** (e.g., dense metal walls, competing devices).

- You need **professional-grade security** with 24/7 monitoring.

- You expect **long-term durability in harsh outdoor conditions** without additional protection.

**Alternative Considerations:**

- For **smart home integration**, consider **Ring Chime Pro, Nest Hello, or Eufy Video Doorbell**.

- For **basic wireless chimes**, a simpler model (e.g., **AcuRite or Zmodo**) may suffice if range and chime variety are less critical.

- For **security-focused systems**, explore **SimpliSafe, Abode, or Wyze cameras** for more advanced features.

**Final Verdict:**

This product is a **solid, budget-friendly choice** for those prioritizing **simplicity, range, and customization** in a wireless door chime and sensor system. It s particularly well-suited for **small to medium homes, garages, or properties where wiring is impractical**. However, users with more complex security needs should supplement it with additional systems.

Details:

Door Chime, Wireless Open Contact Sensor Alarm with 500 FT Range, 58 Chimes and 5 Volume Levels for Business/Store/Home/Office When Entering, 1 Transmitter Plug-In Receiver:: Unit Count 1.0 Count, Receiver, Mfr Part Number M520 D015-W, Mounting Type Mount, Power Source Battery Powered, of Batteries AAA batteries required. Can its sensor detect opening of sliding Doors or windows. .: Our Door alarms can be used for glass. You can slide off the back cover of transmitter to access and replace battery. Reliable After-sales One Year Warranty Lifetime Friendly Service.

Does its receiver remember chosen chime and volume level. .: Yes, the remembers level. Included, Color White, Sensor Technology Contact Sensor, Control Method App, Compatible Devices Door Sensors, model Number M520 D015-W, Item Weight 0.15 Kilograms, Audible Noise 120 Decibels, Built-In Media 1 Transmitter battery Plug-in receiver, Adhesive tape, 2 Screw,1 User manual, Battery Alkaline, Type Name Door chime, Maximum Range 500 Feet, Manufacturer co. Does its receiver allow pairing with multiple sensors. .: Of course. How easy is it to replace the transmitter battery. .: Replacing battery very.

Built to Last With one standard household AAA battery in equipment and design of Ultra-Low-Power, the sensor can easily last 1-2 years. Prefer not to be disturbed.: METAK Wireless Door Chime Your Homes Welcoming Voice!: Can its volume be adjusted to very loud levels. .: Yes, the can levels. Moreover the Door chimes are suitable for windows.

What about insecure front Door, child safety gate, upstairs window, cabinet, basement Door. Purchase Metals Door chimes for expansion matching freely. The memory function allows it to retain settings when unplugged or off. Set it to mute.

Which allows battery to be replaced less often, save your time and money. A Must-Have 500FT reliable long working range, perfect entry alert chime when Door opens for home and business.

specifications doorbellsdo:

  • brand: Door
  • part type: Chime Contact Sensor Alarm
  • unit count: 1.0 Count
  • style: 1 Sensor 1 Receiver
  • mfr part number: M520 D015-w
  • mounting type: Door Mount
  • power source: Battery Powered
  • number of batteries: 1 Aaa Batteries Required.
  • color: White
  • sensor technology: Contact Sensor
  • control method: App
  • compatible devices: Door Sensors
  • item weight: 0.15 Kilograms
  • audible noise: 120 Decibels
  • built-in media: 1 Transmitter, 1 Plug-in Receiver, 1 Adh
  • battery description: Alkaline
  • item type name: Door Chime
  • maximum range: 500 Feet
  • upc: 744110291605

returns Doorbellsdo:

  • paid by: Seller
  • method: Money back
  • time: 30 Days
  • policy: Returns Accepted

seller Doorbellsdo:

  • # reviews: 2315
  • rating: 99.9%
  • city: Fort Lauderdale, Florida

offer Doorbellsdo:

  • options: Ship-to-home
  • sold: 0
  • started: May 1, 2026
  • quantity: 1
  • availability: In Stock

general Doorbellsdo:

  • condition: New
  • Building Hardware > Doors Door Hardware > Doorbells

shipping Doorbellsdo:

  • type: Fixed
  • transit: 5-8 Days
  • service: UPS 3 Day Select
  • class: Expedited
  • cost: $0.00
  • carrier: UPS

payments Doorbellsdo:

  • credit card: Visa
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  • wallet: Paypal
part type: chime contact sensor alarm, unit count: 1.0 count, style: 1 sensor 1 receiver, mfr part number: m520 d015-w, mounting type: door mount, power source: battery powered, number of batteries: 1 aaa batteries required., sensor technology: contact sensor, control method: app, compatible devices: door sensors, item weight: 0.15 kilograms, audible noise: 120 decibels, built-in media: 1 transmitter, 1 plug-in receiver, 1 adh, battery description: alkaline, item type name: door chime, maximum range: 500 feet,
category: home & garden > building hardware > doors door hardware > doorbells, color: white, sku: 16179145998083663,
Door M520 Is Similar To:
doorbellsdo logo
5 offers $20.00–$31.45 USD
  • New. Offer #1 priced at $20.00 + $9.14 shipping estimate = $29.14* total. The installation is then complete! Pair different ringtone to each sensor, so that you can realize exactly which door is triggered. Easy to Install & Low Power Durable Battery The door receiver and door sensor have been paired.+$9.14 shipping
  • New. Offer #2 priced at $23.83 + $0.00 shipping estimate = $23.83* total. Of course! The receiver can pair with multiple sensors up to 20 Our door alarms can be used for sliding glass doors.FREE SHIPPING
  • New. Offer #3 priced at $31.45 + $0.00 shipping estimate = $31.45* total. FREE SHIPPING
  • New. Offer #4 priced at $47.75 + $0.00 shipping estimate = $47.75* total. Easy to install: The sensor and receiver are paired, attach the transmitter, plug in the receiver, select a tone and it's ready to use.FREE SHIPPING
  • New. Offer #5 priced at $29.22 + $0.00 shipping estimate = $29.22* total. FREE SHIPPING

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