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Retrofit Relays & Dimmers

2 Channel Zigbee Retrofit Dimmer

A dual-channel Zigbee phase-cut dimmer that retrofits two standard wall switches with independent brightness control — without replacing any existing hardware.

2 Channel Zigbee Retrofit Dimmer

Protocol: Zigbee 3.0 · Type: Phase-Cut Dimmer · SRP: ₹3,250

Works with: Amazon Alexa · Google Home · Siri / Apple HomeKit

Compatible with dimmable loads only. Not a 0-10V controller. Does not function as a simple on/off relay.
Requires: Zigbee coordinator or hub. Dimmable fixtures or drivers required.

Description

A dual-channel Zigbee phase-cut dimmer that retrofits two standard wall switches with independent brightness control — without replacing any existing hardware.

Each channel independently supports phase-cut dimming up to 100W for compatible dimmable lighting fixtures and drivers. Installs behind existing switches in a flush box or on DIN rail. Communicates natively over Zigbee 3.0 with Home Assistant, and integrates with Matter and Apple HomeKit via a compatible hub.

Specifications

SpecificationValue
Channels2 (independent)
Max Switching100W per channel
Recommended LoadDimmable fixtures / drivers only
InstallationFlush box or DIN rail
CompatibilityHome Assistant (native), Matter & Apple HomeKit (via hub)
Voltage90–250V AC
Max Power75W (110V) / 150W (220V)
Wireless ProtocolZigbee 3.0
Operating Temperature0°C to +40°C
Case Temperature (Tc)+80°C Max
Dimensions40 × 40 × 18 mm
IP RatingIP20
Frequency Band2.405–2.480 GHz
Max Radio Transmit Power<+10 dBm
Installation TypeBehind Switch / DIN Rail

Installation

Requirements

  • Existing wall switch in a flush box (≥ 60mm depth recommended)
  • Live, Neutral, and Load wires in the flush box
  • Zigbee coordinator within range

Turn off the circuit breaker for the affected circuit.

Remove the existing switch plate. The retrofit module sits behind the existing switch — no visible hardware change.

Connect wiring:

  • Live → L input
  • Neutral → N input
  • Load → load output(s)

Fit the module into the flush box. Use DIN rail adapters for panel board installation.

Replace the switch plate.

Restore power. The device will blink — ready to pair.

Pair with your Zigbee coordinator.

Load Limits

  • Standard relay: up to 4A direct. For 4–10A, use an external relay/SSR/contactor.
  • 40A relay: rated for direct high-current switching. Proper cable sizing and circuit protection mandatory.
  • Dimmer modules: resistive and leading-edge dimmable loads only. Not suitable for ceiling fans.

Shutter Module

The shutter module controls motorised curtains, blinds, and shutters:

  • M1, M2 → motor up/down terminals
  • Configure travel time in your coordinator for accurate position reporting.

Ordering

SRP (incl. GST)₹3,250
GST Rate18%
HSN Code85365090