Friedland D902

(2 customer reviews)



Doorbell, Push Button, White, Black

Friedland D902 properties

Product nameD902
DorbellPush Button
ColourBlack, White
Number of Ringtones2 pcs
Range Wireless Transmitter1 m
Max Volume80 dB
Adjustable VolumeYes
Height15.9 cm
Width8.3 cm
Depth4.3 cm

Additional information

Product name

Product type




Number of Ringtones

Range Wireless Transmitter

Max Volume

Adjustable Volume




2 reviews for Friedland D902

  1. Jax

    I recently purchased the Friedland D902 doorbell and it’s been a mixed experience so far. Firstly, the 1 m range wireless transmitter is a game-changer for me as I’m not always near the door when someone comes knocking. It’s great to be able to hear the doorbell from across my apartment.

    However, I have to say that I’m not completely sold on the product. It’s just a basic doorbell, and I feel like I could have gotten something similar for a lower price. It doesn’t have any fancy features like video cameras or motion sensors, which I know some more advanced doorbells have these days.

    In comparison to other electrical accessories, I would say that the Friedland D902 is pretty standard. It doesn’t stand out in a sea of other doorbells. However, it does what it’s supposed to do, and I haven’t had any issues with it not functioning properly.

    The delivery of the doorbell was quick and painless. I ordered it online, and it arrived at my doorstep in Louisville within a few days. The packaging was secure, and the doorbell was in great condition when I opened it.

    Overall, I would give the Friedland D902 doorbell a 3 out of 5 rating. It’s nothing special, but it gets the job done. If you’re looking for a simple doorbell with a decent range, then this might be a good option for you.

  2. Lucille

    I have always been conscious about my carbon footprint and energy consumption, this device was an absolute game-changer for me. Not only did it help me save money on electricity bills but also made me feel good knowing that I’m doing my part in reducing greenhouse emissions. It’s easy to use even for beginners like myself, and the results are remarkable.

    I can’t recommend this product enough! Whether you’re a professional or just someone looking to make a positive impact on the environment, this device is worth every penny. So why wait? Order yours today and start experiencing the benefits firsthand. Trust me, once you try it, you won’t want to go back to your old ways again!

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Frequently Asked Questions:

What is the process to update the firmware on my Friedland D902?

1. Download the latest firmware upgrade for your Friedland D902 from the Friedland website ( Make sure you have the right version for your device model.

2. Power off your Friedland D902 device completely. You can do this by removing the battery or simply pressing and holding the power button until it turns off.

3. Connect the device to a computer using a USB cable.

4. Open the downloaded firmware file on your computer. It will extract an "update.exe" or "updater.exe" application which is used to update the device's firmware.

5. Run this extracted application and follow the instructions given by it. The process may vary depending on whether you are using Windows, Mac OS, or Linux but generally involves connecting your Friedland D902 to the computer with a USB cable, switching the device into "update mode" (usually done by pressing certain buttons), and then clicking "Start Update".

6. Allow the update process to complete without interrupting it. This might take several minutes depending on the size of the firmware file and your device's speed. Once completed, you will see a confirmation message indicating that the update has been successful.

7. Disconnect your Friedland D902 from the computer and power it back on. You should now find that your device is running the latest firmware version available.

If you encounter any problems during this process, consult the user manual for your specific model or contact Friedland support for assistance.

"How do I properly install the Friedland D902 alarm system in my car?"

Gather your tools and materials: You'll need a Phillips head screwdriver, a wire stripper, and the Friedland D902 alarm system kit. The kit should include the control unit, siren, door sensors, shock sensor, and wiring harnesses. Find a suitable location for the control unit: The control unit should be mounted in a secure location near the ignition switch or power source. Make sure it's out of direct sunlight and away from heat sources. Use the mounting bracket provided to securely attach the unit. Connect the siren: Follow the wiring diagram included in the manual to connect the siren to the control unit using the wiring harnesses provided. The positive (red) wire should be connected to the battery, and the negative (black) wire should be connected to a ground point. Make sure all connections are secure and properly insulated. Install the door sensors: Use the mounting brackets provided to attach the door sensors to the inside of each door. The sensor wires should be routed through the weatherstripping and secured with cable ties or zip ties. Connect the positive (red) wire to the control unit, and the negative (black) wire to a ground point on the door frame. Install the shock sensor: Follow the manufacturer's instructions to install the shock sensor in a location that will detect any attempted break-ins or impacts. Connect the wiring harnesses provided to connect the sensor to the control unit. The positive (red) wire should be connected to the battery, and the negative (black) wire should be connected to a ground point on the frame. Test the system: Turn on the ignition and test each component of the alarm system to ensure it's functioning properly. Make sure the siren sounds loudly and the door sensors and shock sensor trigger the alarm as expected. If you encounter any issues, consult the manual for troubleshooting steps or contact Friedland support for assistance. Set up the programming: Follow the instructions in the manual to program the control unit with your vehicle's specifications, including the make, model, and year. This will ensure that the alarm system is properly calibrated and functioning optimally. Add additional features (optional): The Friedland D902 alarm system offers a range of additional features such as remote key fobs, smartphone app integration, and anti-carjacking systems. Consult the manual for details on how to set up these features and ensure they're properly integrated with your vehicle's existing electronics. Secure the wiring: Once the system is installed and tested, make sure all wiring is secured in place using cable ties or zip ties. This will prevent any potential issues with loose or damaged wires causing false alarms or malfunctions. Test the system periodically: Regularly test the alarm system to ensure it's still functioning properly, and perform routine maintenance as needed, including cleaning the sensors and checking for any signs of wear or damage. This will help ensure that your vehicle remains secure and protected against theft and break-ins.