Smart Switch Module Avatto ZWSM16-W4 ZigBee compatible with Tuya, in-wall relay module

Avatto ZWSM16-W4 is a compact 4-channel ZigBee 3.0 smart switch module for in‑wall installation that enables remote control and automation of lighting circuits. Designed for use with TUYA / Smart Life ecosystems and compatible ZigBee gateways, the module supports voice control via Amazon Alexa and Google Assistant and can be fitted behind existing switches or inside installation boxes.

Advantages

The Avatto ZWSM16-W4 provides remote on/off control, scheduling, timers and group management through the TUYA / Smart Life app. Its compact dimensions (39 x 39 x 20 mm) make it compatible with most installation boxes and allow easy retrofitting behind existing switches. The module restores last state after power loss, supports two‑way switch configurations, and communicates over ZigBee 3.0 for reliable mesh networking.

Suitable for

• Retrofitting standard wall switches to add smart control
• Controlling multiple lighting circuits (4 channels)
• Home automation setups using TUYA / Smart Life and a ZigBee gateway
• Voice-controlled lighting with Amazon Alexa or Google Assistant

Key specifications

• Brand: Avatto
• Model: ZWSM16-W4
• Colour: White
• Number of channels: 4
• Voltage: AC 100–240 V 50/60 Hz
• Max. load: LED 4 x 150 W / 4 x 2.5 A
• Operating frequency: 2.405–2.480 GHz (IEEE 802.15.4)
• Communication protocol: ZigBee 3.0
• Range: Up to 100 m
• Operating temperature: -10°C to 40°C
• Dimensions: 39 x 39 x 20 mm
• Degree of protection: IP20
• App: TUYA / Smart Life
• Compatibility: Amazon Alexa, Google Home

How to use

Install the module inside the installation box or behind the existing wall switch following local electrical safety rules. Connect live and load wires to the corresponding terminals for up to four channels and power the device from AC 100–240 V. Pair the module with a ZigBee gateway that supports ZigBee 3.0, then add it in the TUYA / Smart Life app to configure channels, schedules and automations. Optionally share device access with other household members or group multiple modules for coordinated control.

Recommendations

For reliable operation, use a compatible ZigBee gateway and place the module within the ZigBee mesh range; ensure wiring and installation are performed by a qualified electrician. Do not expose the device to moisture (IP20 rating) and keep operating temperature between -10°C and 40°C.