Spark ZR-50 Switch Module
Square · 1:1
Keep your switches. Make every light smart.
A compact Zigbee switch module that fits behind existing wall switches. Choose one, two, three or four channels to control separate light circuits from the wall, app, voice or schedules. Pairs through a compatible Zigbee gateway.
1–4channels
Choose the number of lighting circuits.
39.2mm
39.2 × 39.2 × 18 mm body.
300W
Maximum LED load for the 1CH version.
How it fits
Fits in the wall box behind the switch you already have, with a neutral wire required in the box.
Use existing wall switches, including supported two-way arrangements.
Pairs through a compatible Zigbee gateway.
Installation by a qualified electrician with the circuit power switched off.
Four ways to control
Keep using the wall switches or control each circuit with the app, a compatible voice assistant and timer schedules.
Existing switches continue to work.
Switch individual lighting circuits from your phone.
Alexa and Google Home through a compatible Zigbee hub.
Schedules turn lights on and off automatically.
Choose your version
Match the module to the number of switch gangs and lighting circuits. Channel load limits vary by version.
One circuit: LED 300 W / 16 A.
Two circuits: LED 2 × 150 W / 2 × 5 A.
Three circuits: LED 3 × 150 W / 3 × 3.3 A.
Four circuits: LED 4 × 150 W / 4 × 2.5 A.
Original installation diagrams
The original brochure shows one switch per circuit, two-way switching, and operation without wall switches.
Use the supplied brochure for the complete terminal and wiring information.
Switch off circuit power before wiring; installation by a qualified electrician.
3CH and 4CH
The 3CH and 4CH versions use screw terminals for the light circuits and supply, with S1–S3 or S1–S4 plus COM flying leads for the switches.
Planning a home or a building? A Spark partner can specify the right ZR-50 for it.