Best Retrofit Light Switches

Leviton DW4BC-1BW Decora Smart Wi-Fi 4 Button Controller, No Hub Required, 1 Pack, White, Wall plate included

One-Touch Control: Sophisticated in-wall control of multiple Decora Smart Wi-Fi devices, room lighting scenes, and whole house lighting activities..
Easy to Setup: With the My Leviton app, easily create room scenes “Movie Time”, or whole-home activities like “Go to Bed”..
Fun to Use: send commands to your Decora Smart Wi-Fi lighting products including dimmers, switches, and smart plugs..
No Load Control: does not connect directly to a light fixture and requires a hot, neutral, and ground wire for installation..
For retrofit applications, install in a multi-way circuit with a Decora Smart Wi-Fi switch or dimmer. Control the Switch or dimmer from any of the 4 buttons..

RETROFIT: Shelly 1L does not require you to change any wiring or run new cables- just put it behind your existing wall switch and turn any light smart in under 10 minutes!.
NO NEUTRAL REQUIRED: Power and control your lights, fan, or other appliances with only a live wire. Its small size allows for installation in limited spaces, such as wall switches..
NO HUB REQUIRED: You can control Shelly 1L directly, no hub required. It is compatible with any Wi-Fi router. Or if you prefer you can connect it to your home automation platform..
WIDE RANGE OF VOLTAGE SUPPORT: Shelly 1L supports 110-230V AC, as well as a great variety of load and light types..
HIGHLY COMPATIBLE: Compatible with Android, iOS, Amazon Alexa and other 3rd party home automation systems..

BRIGHT WHITE LIGHT: Philips LED Dimmable Recessed Lighting Fixtures offer bright and comfortable lighting with high CRI (color rendering index). At 3000 Kelvin the bulbs deliver bright, crisp color ideal for project and task lighting as well as to brighten larger spaces.
EASY INSTALLATION: The retrofit LED recessed can downlights come with E26 medium screw bases.
Not compatible with Philips HUE products.
Philips LED Dimmable 5 inch/ 6 inch Downlight Recessed Lighting Fixtures are for non connected use only.

PIR Motion Sensor detects motion up to 13ft away - Light stays on for 30 seconds after motion is not detected.
1300 Lumens, 14 watts equivalent to a 100 watt incandescent, CRI rating of 80.
5 CCT select of 2700K/3000K/3500K/4000K/5000K allows you to choose whatever light color you prefer by easily utilizing the switch on the back of the retrofit recessed fixture..
120 Volts AC, Fits standard 5” & 6” cans.
UL Listed, Wet rated light is ideal for garages, outdoor soffits, living rooms, bedrooms, kitchens, dens, bathrooms, hallways, and more..
This retrofit downlight consumes less power than a traditional light would consume, allowing you to be more energy-efficient and save money..
This fixture is made with an aluminum body making it lightweight..
6” retrofit downlight dimensions are 2.83” height 7.32” diameter with a trim size of 1.75”.
50,000 Lifetime hours with a 3 year warranty.

2x40watt incandescent, 2x11watt CFL or 20watt T9 circline equivalent while only 17watt used, at least 70% energy saving, drastically reduce your electricity bill.
With the latest integral driver-on-board(DOB) and 120V AC drive technology, no extra external AC-DC driver needed, high-end solution to retrofit your fancy ceiling lights.
Down to 5% triac dimming capacities, totally flicker free, much even lights and no more ugly light spot, 80+ CRI(Color Rendering Index), multiple and easy installation.
40,000 hours lifespan, it is 4x longer than CFLs(10,000hours). 5 years limited warranty, UL approved for use in luminaires and suitable for damp location, lowest maintenance, risk-free purchase.
Application: ceiling fan light, pandent, ceiling light, lantern light, garden light and other fixtures which have a plate to attach this retrofit kit. Check the inner diameter of your fixture before place an order.

....0 Sones, 110V 45W(with 15W LED Light), 50/ 60 Hz to help control air quality, reduce moisture, odors, powerful enough for rooms (including bathroom) up to 105 sq. ft. for your convenience.
Recommended for professional bathroom installation.
【Easy installation】quick-start new or replace existing ventilation with retrofit design that can be done entirely from the room-side, no attic access required.

The Hawkeye 921 provides accurate load trending information with a proportional 4-20mA output signal..
Preset slide-switches provide easy field setup of sensed amperage range with no need for jumpers..
Applications: Load trending. Motor control. Fan/Pump Status. Loop powered analog current sensor simplifies installation. Power the sensor, and receive the signal with only two wires..
Lower cabling and commissioning costs than with traditional 3-wire sensors. Self-gripping split-core for fast retrofit installation..

5 CCT Select of 2700K/3000K/3500K/4000K/5000K allows you to choose whatever light color you prefer by easily utilizing the switch on the back of the retrofit recessed fixture..
13W equivalent to 100W. This retrofit downlight consumes less power than a traditional light would consume, allowing you to be more energy-efficient and save money..
1300 lumen output of light that provides illumination throughout the room. This damp rated light is ideal for living rooms, bedrooms, kitchens, dens, bathrooms, hallways, and more..
This fixture is made with an aluminum body making it lightweight..
6” retrofit downlight dimensions are 7.35”D x 2.16”H. E26 Quick Connect adaptor is included..
Dimmable range of 20 - 100% with a CRI rating of 90.
Control up to 10 of these 5CCT downlights with a 150W max LED dimmer by Maxxima..
Installs into most 5” and 6” ceiling cans with lever tension spring clips. Foam Gasket Included for air-tight application..