| Everyday on/off control | Single-pole smart switch | Bedrooms, hallways, and other lights controlled from one wall location | Many models require a neutral wire; confirm the wiring in the switch box and the product instructions. | Models may use Wi-Fi, a dedicated hub radio, or Matter over a supported network. | $15–$35 per switch | Check the rated voltage and load type, such as LED, incandescent, or compatible lighting drivers. |
| Adjustable lighting | Smart dimmer switch | Living rooms, dining rooms, and bedrooms where adjustable brightness is useful | Neutral-wire requirements vary. Some installations also need a compatible dimmer arrangement at each control point. | Choose a model compatible with the household’s preferred app or hub; Matter support is model-specific. | $20–$50 per switch | Confirm that each bulb is dimmable and that the dimmer supports its bulb type and total load. |
| Two-location light control | Smart 3-way switch or compatible switch-and-companion set | Stairways, long hallways, and rooms with two wall controls for the same light | Existing 3-way wiring can differ by installation. Use a setup specifically designed for multi-location control. | Check whether the companion control must be wired, paired wirelessly, or connected through a hub. | $25–$65 for a basic setup | Verify compatibility with the existing circuit and read the wiring diagram before purchase. |
| Older switch boxes without a neutral | Neutral-free smart switch, where supported | Renovation projects or locations where the switch box lacks a neutral conductor | Only suitable when the specific switch supports the circuit. Some designs require a bypass at the light fixture. | Available connectivity varies; confirm the required hub, network, and control method. | $25–$60 per switch | Check minimum load requirements, LED compatibility, and whether a bypass or special wiring is required. |
| Ventilation and fan control | Fan-rated smart switch or fan controller | Bathrooms, utility rooms, and ceiling fans when the controller is rated for that exact load | Fan motors and light kits may need separate controls. A lighting dimmer is not a substitute for a fan-rated controller. | Confirm whether the controller offers app control, scheduling, voice-assistant integration, or hub support. | $25–$70 per control | Match the device to the fan or motor type, current rating, and any separate light circuit. |
| Lower-cost smart control without replacing a wall switch | Smart plug for a plug-in lamp or appliance | Table lamps and other compatible plug-in devices in living areas or bedrooms | No wall-switch wiring is needed, but the connected device must be suitable for plug-in control. | Check for Wi-Fi, hub, or Matter support and confirm that the required network is available. | $10–$30 per plug | Check the plug’s electrical rating. Do not use it with loads the device instructions exclude. |