1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Kasa Smart Dimmer Switch KS220P3. This smart dimmer switch allows you to control your lighting with precision, integrate with smart home ecosystems like Apple HomeKit, Amazon Alexa, and Google Home, and manage your lights remotely via the Kasa app. Please read this manual thoroughly before installation and use to ensure proper functionality and safety.
Image 1.1: Kasa Smart Dimmer Switch KS220P3 (3-pack) with packaging.
2. Safety Information
WARNING: RISK OF ELECTRIC SHOCK. Improper installation can be dangerous or illegal. Always consult a qualified electrician if you are unfamiliar with electrical work.
- Turn off power at the circuit breaker before installing the switch.
- Ensure the switch is installed in a standard wall box.
- A neutral wire is required for installation. If your wiring does not include a neutral wire, this switch is not compatible.
- Do not exceed the maximum load rating of 2.5 Amps (100-120 VAC, 50/60 Hz).
- Use only with dimmable light bulbs.
- This device is intended for indoor use only.
3. Package Contents
Verify that your package contains the following items:
- 3x Kasa Smart Wi-Fi Light Switch (KS220P3)
- 3x Wall Plate
- 12x Wire Nuts & Labels
- 1x Quick Start Guide
4. Product Features
The Kasa Smart Dimmer Switch KS220P3 offers a range of features designed to enhance your home lighting experience:
- Apple HomeKit Support: Seamlessly integrate with your Apple ecosystem and control lights using Siri. (Remote control requires an additional networked Apple device like a HomePod or Apple TV).
- App-Guided Installation: The Kasa app provides step-by-step instructions for easy setup. A neutral wire and 2.4GHz Wi-Fi connection are required.
- Voice Control: Control your lights hands-free using Apple Siri, Amazon Alexa, or Google Assistant.
- Gentle Off: Configure lights to fade on with a single click or gently fade off with a double-click, ideal for winding down.
- Advanced Scheduling & Timer: Set custom schedules and timers for automatic light control, including an 'Away Mode' to simulate occupancy.
Image 4.1: Voice control functionality with various smart assistants.
Image 4.2: Scheduling feature for automated light control.
Image 4.3: Gentle Off feature for gradual light dimming.
5. Installation Guide
Important: A neutral wire is required for the Kasa Smart Dimmer Switch KS220P3. Ensure your electrical box has a neutral wire (typically white) before proceeding. If you are unsure, consult a qualified electrician.
Step-by-Step Installation
The Kasa app provides detailed, easy-to-follow, step-by-step instructions for installation. Download the Kasa Smart app from the App Store or Google Play to begin.
Image 5.1: App-guided installation steps for the Kasa Smart Dimmer Switch.
Wiring Diagram
Refer to the following diagram for proper wiring connections. Always ensure power is off at the circuit breaker before handling wires.
Image 5.2: Standard wiring diagram for the Kasa Smart Dimmer Switch.
Wire Identification:
- Line: Usually black and coming from the circuit breaker.
- Load: Usually black. One end is connected to the light fixture.
- Neutral: Usually white. Required for the smart switch.
- Ground: Usually green or bare copper.
If you are unsure about identifying wires, please consult a qualified electrician.
6. Operating Your Smart Dimmer Switch
Kasa App Control
Once installed and connected to your 2.4GHz Wi-Fi network, use the Kasa Smart app to:
- Turn lights on/off.
- Adjust brightness levels.
- Set schedules and timers.
- Enable 'Gentle Off' and 'Away Mode' features.
- Monitor energy usage (if supported by the app version).
Voice Control
Integrate your Kasa Smart Dimmer Switch with your preferred voice assistant:
- Siri (Apple HomeKit): "Hey Siri, turn on the living room light." or "Hey Siri, dim the kitchen lights to 50%."
- Amazon Alexa: "Alexa, turn off the bedroom light." or "Alexa, set the dining room lights to warm white."
- Google Assistant: "Hey Google, brighten the office lights." or "Hey Google, turn on the porch light."
Apple HomeKit Integration
To add your Kasa Smart Dimmer Switch to Apple Home:
- Ensure your phone is connected to a stable 2.4 GHz Wi-Fi network.
- Open the Apple Home App.
- Scan the QR code on the switch or in the Kasa app using the Apple Home App or your camera app.
- Follow the on-screen instructions in the Apple Home App to complete the setup.
Image 6.1: Steps to add the Kasa Smart Dimmer Switch to Apple Home.
7. Troubleshooting
Failed to Add to HomeKit
- Perform a factory reset on the device and restart your phone. Then try adding it again.
- Ensure your phone is connected to a 2.4GHz Wi-Fi network during the setup process.
- For further assistance, visit the Kasa support FAQ: https://www.tp-link.com/support/faq/3390/
Switch Not Responding
- Check your Wi-Fi connection. Ensure the switch is within range of your router.
- Verify that the circuit breaker is on and the switch is receiving power.
- Restart the switch by turning off the circuit breaker for 10 seconds, then turning it back on.
- Ensure your Kasa app is updated to the latest version.
8. Specifications
| Product Dimensions | 5.04 x 3.33 x 1.77 inches |
| Item Weight | 1.17 Pounds |
| Model Number | KS220P3 |
| Operation Mode | ON-OFF |
| Current Rating | 2.5 Amps |
| Operating Voltage | 100 - 120 VAC, 50/60 Hz |
| Contact Type | Normally Closed |
| Connector Type | Screw |
| Terminal | SPST (Single Pole Single Throw) |
| Circuit Type | 1-way |
| Actuator Type | Push Button |
| Manufacturer | TP-Link |
9. Maintenance
The Kasa Smart Dimmer Switch KS220P3 requires minimal maintenance.
- Clean the switch and wall plate with a soft, dry cloth. Do not use liquid cleaners or aerosols.
- Ensure the switch is kept in a dry environment and away from excessive heat.
- Regularly check for firmware updates via the Kasa app to ensure optimal performance and security.
10. Warranty and Support
The Kasa Smart Dimmer Switch KS220P3 comes with an industry-leading 2-Year Warranty from the manufacturer, TP-Link. This warranty covers defects in materials and workmanship under normal use.
For technical support, warranty claims, or additional information, please visit the official Kasa Smart support website or contact their customer service. You can find more resources and FAQs at:
Image 10.1: Kasa Smart brand assurances including UL certification and warranty.
