Welcome to Our Website! If you stay on our site, we and our third-party partners use cookies, pixels, and other tracking technologies to better understand how you use our site, provide and improve our services, and personalize your experience and ads based on your interests. Learn more in your privacy choices.
KD110
Recent updates may have expanded access to feature(s) discussed in this FAQ. Visit your product's support page, select the correct hardware version for your device, and check either the Datasheet or the firmware section for the latest improvements added to your product. Please note that product availability varies by region, and certain models may not be available in your region.
Kasa doorbell requires to wire to your existing doorbell system and get power from the transformer, if your Kasa doorbell (KD110D, the doorbell camera) is not receiving power, flashing red, or not broadcasting Wi-Fi SSID, this article shares some troubleshooting tips on how to fix it.
Warning: BE CAREFUL OF THE ELECTRIC SHOCK AND TURN OFF THE POWER OF TRANSFORMER FIRST. Turn OFF the power to the transformer and doorbell by flipping the breaker to the OFF position when you install the doorbell.
1. Check if the transformer provides 16V-24VAC output voltage and minimum 10VA Power Output
Visit Kasa Doorbell Compatibility to check if your existing transformer is compatible.
If you’re not sure about the power output of the transformer, use a multimeter to measure the voltage/amps of your transformer output, or reach out to a qualified electrician for help.
NOTE: If the transformer fails not to meet the 16-24VAC ≥10VA requirement, it might cause problems for your doorbell or even damage the doorbell.
2. Make sure the doorbell itself is NOT short-circuited
Pay attention not to connect the exposed part of two wires behind the KD110D together otherwise, it will short out the doorbell and cause no power or damage the transformer
If the exposure part of the wire is pretty long, you may wrap the exposed metal parts of the two wires with insulating glue or cut the redundant wire.
3. Make sure jumper wire is properly installed
The original chime should be short-circuited and bypassed by installing the jumper wire.
NOTE: Do NOT have any device between the transformer and the KD110D, a load device between transformer and doorbell may cause the doorbell to restart or even damage the transformer
4. Use Correct Wire Gauge
Wire ‘Gauge’ is to define the diameter of the wire. The wire can work for the doorbell when meeting one of the two requirements:
More than 25 AWG means the wire is too thin with higher resistance and may not be able to deliver adequate power to your doorbell. Here is America Wire Gauge (AWG) table (from Wikipedia) for reference.
(Optional) Use a Multimeter to Measure Wire Resistance
1)Turn off the power to the transformer. Disconnect the two wires connected to the transformer.
2) Remove the KD110D and short the two wires together.
3) Use a multimeter to measure the resistance value between the two wires connected to the transformer. (as the following picture)
If the problem persists despite the above steps, please contact us directly and you may provide the following information when reaching support.
1) Model of the Transformer.
2) How long is the wire between the transformer and the doorbell?
What is the wire gauge (diameter of wire) or the resistance of the wire?
3) A photo of the wiring of the original chime
4) Please describe the steps of installing your KD110D in detail.
Is this faq useful?
Your feedback helps improve this site.
What’s your concern with this article?
Thank you
We appreciate your feedback.
Click here to contact TP-Link technical support.
TP-Link Community
Still need help? Search for answers, ask questions, and get help from TP-Link experts and other users around the world.
As explained further in our website Privacy Policy, we allow certain advertising partners to collect information from our website through cookies and similar technologies to deliver ads which are more relevant to you, and assist us with advertising-related analytics (e.g., measuring ad performance, optimizing our ad campaigns). This may be considered "selling" or "sharing"/disclosure of personal data for "targeted advertising" as defined by certain U.S. state laws. To opt out of these activities, press "Opt Out" below. If the toggle below for "Targeted Advertising and 'Sale' Cookies" is to the left, you are already opted out and you can close these preferences.
Please note that your choice will apply only to your current device/browser. You must indicate your choice on each device and browser you use to access our website. If you clear your cookies or your browser is set to do so, you must opt out again.
Your Privacy Choices
As explained further in our website Privacy Policy, we allow certain advertising partners to collect information from our website through cookies and similar technologies to deliver ads which are more relevant to you, and assist us with advertising-related analytics (e.g., measuring ad performance, optimizing our ad campaigns). This may be considered "selling" or "sharing"/disclosure of personal data for "targeted advertising" as defined by certain U.S. state laws. To opt out of these activities, press "Opt Out" below. If the toggle below for "Targeted Advertising and 'Sale' Cookies" is to the left, you are already opted out and you can close these preferences.
Please note that your choice will apply only to your current device/browser. You must indicate your choice on each device and browser you use to access our website. If you clear your cookies or your browser is set to do so, you must opt out again.
Necessary Cookies
These cookies are necessary for the website to function and cannot be switched off.
TP-Link
accepted_local_switcher, tp_privacy_banner, tp_privacy_base, tp_privacy_marketing, tp_top-banner, tp_popup-bottom, tp_popup-center, tp_popup-right-middle, tp_popup-right-bottom, tp_productCategoryType
Youtube
id, VISITOR_INFO1_LIVE, LOGIN_INFO, SIDCC, SAPISID, APISID, SSID, SID, YSC, __Secure-1PSID, __Secure-1PAPISID, __Secure-1PSIDCC, __Secure-3PSID, __Secure-3PAPISID, __Secure-3PSIDCC, 1P_JAR, AEC, NID, OTZ
Targeted Advertising and "Sale" Cookies
These cookies allow targeted ads or the "sale" of personal data (toggle to the left to opt out).
Analytics cookies enable us to analyze your activities on our and other websites in order to improve and adapt the functionality of our website and our ad campaigns.
Advertising cookies can be set through our website by our advertising partners in order to create a profile of your interests and to show you relevant advertisements on other websites.
Google Analytics & Google Tag Manager
_gid, _ga_<container-id>, _ga, _gat_gtag_<container-id>
Google Ads & DoubleClick
test_cookie, _gcl_au
Meta Pixel
_fbp
Crazy Egg
cebsp_, _ce.s, _ce.clock_data, _ce.clock_event, cebs
lidc, AnalyticsSyncHistory, UserMatchHistory, bcookie, li_sugr, ln_or
Welcome to Our Website! If you stay on our site, we and our third-party partners use cookies, pixels, and other tracking technologies to better understand how you use our site, provide and improve our services, and personalize your experience and ads based on your interests. Learn more in your privacy choices.
Accessibility Adjustments
Choose the right accessibility profile for you
Seizure Safe
Eliminates flashes and reduces color
Cognitive Disability
Assists with reading and focusing
Vision Impaired
Enhances the website's visuals
ADHD Friendly
More focus and fewer distractions
Content Adjustments
Adjust Scale
Highlight Title
Highlight Link
Text Magnifier
Readable Font
Align Center
Align Left
Align Right
Color Adjustment
Low Saturate
High Saturate
Dark Contrast
Light Contrast
Set Text Colors
Monochrome
Set Title Colors
High Contrast
Set BackgroundColor
Orientation Adjustments
Muted
Hide Images
Stop Animation
Reading Mask
Highlight Hover
Big Black Cursor
Big White Cursor
Hide Video/Audio
Stop Video
Stop Audio
Hide Animation
Reading Guide
Useful Links
Web Accessibility Solution