Lutron Caseta Original Smart Dimmer Switch vs Sonoff Orb-ZBDIM Zigbee Dimmer Wall Switch

Zigbee over IEEE 802.15.4 on an EFR32MG21 MCU. It also acts as a Zigbee router and repeats the mesh for nearby devices, but it still needs a coordinator such as a SONOFF bridge, an iHost, an NSPanel Pro or a USB dongle to join.

Lutron documents the LED behaviour on this model as fixed, with no brightness setting or off option (the newer Diva line uses an adjustable light bar instead)

Power metering shows the lighting circuit's consumption in real time, which the product page presents as "See Your Savings while Dimming".

Power failure memory: if power is interrupted, the control returns to the level it was set to before the interruption

The dimmer is wired to the load it controls; the wire-free half of the system is the separate Pico remote

Lutron lists Amazon Alexa among the platforms Caseta works with, through the Lutron Smart Hub

SONOFF's description states the switch works across Home Assistant, Alexa and other smart home platforms through a Zigbee gateway.

Lutron states the smart hub itself contains Apple Home technology, so Siri controls the lights once the dimmer is paired to it

The Orb-ZBDIM has no native HomeKit profile. Its product page carries a "Works with Apple Home Via Matter Bridge" section: a SONOFF ZBBridge-U or eWeLink CUBE republishes the switch into Apple Home over Matter.

Lutron lists Google Assistant among the platforms Caseta works with, through the Lutron Smart Hub

The retail listing is titled "Compatible with Alexa & Google Assistant", and SONOFF's distributor documentation describes setting a brightness percentage by voice through Google Assistant.

The core Lutron Caseta integration talks to the Lutron Caseta Smart Hub (L-BDG2-WH) and exposes wall dimmers as lights

The product page has an "Easily Integrates with Open-Source Platforms" section for Home Assistant through the SONOFF Dongle series, and owners report running the switch under both Zigbee2MQTT and ZHA.

The CSA certified-product database holds no Matter certification for Lutron (only two Zigbee 3.0 Aurora dimmers), and Lutron's own Caseta compatibility page never mentions Matter

The switch itself is Zigbee, not Matter. Its product page documents reaching Matter platforms through a SONOFF Matter bridge, the ZBBridge-U or eWeLink CUBE, and SONOFF sells the Orb-DIM as the native Matter version.

Lutron publishes a Caseta page for Samsung SmartThings: lights and shades are controlled from the SmartThings app once the Lutron Smart Hub is connected

SONOFF's distributor documentation lists Samsung SmartThings among the supported platforms, and a buyer reports the switch joining a SmartThings hub and appearing as a dimmable light.

Operating voltage 120 V~ 50/60 Hz

The specification table rates the switch at 220-240V~ 50Hz, and the product description warns that it is a 220-240V only device, so it is not intended for 110-120V wiring.

The product page caps dimmable electronic transformers at 200W and dimmable LED lighting at 200VA.

Dimmable LED rated for 120 V~, up to 150 W with LED+ forward-phase dimming

The load compatibility panel on the product page warns that the dimmer is not suitable for fluorescent lamps, CFLs, LED strips or inductive loads such as motors and fans.

Amazon's Product Information lists the dimmer's current rating as 1.25 A

Two-wire dimmer designed for retrofit, so no neutral wire is needed in the wallbox

SONOFF's own FAQ answers it directly: the Orb-ZBDIM requires a neutral wire for proper installation and operation.

SONOFF's specification table reads "220-240V~ 50Hz 400W Max Resistive load", and the label on the back of the unit repeats the same figure.

Overcurrent protection is listed among the switch's built-in safeguards.

Overheat protection is one of the four safety badges on the product page, and the description says power is disconnected automatically when an abnormality is detected.

Overload protection is listed among the switch's built-in safeguards, alongside overcurrent and overheat.