MHCOZY 4CH WiFi Relay Module – 4-Channel Smart Switch with Alexa/Google Home & Tuya App

Meet the MHCOZY 4CH WiFi Relay Module

The MHCOZY 4CH WiFi Smart Relay Module is a compact, multi-purpose networked switch designed to simplify home automation. Compatible with the free Smart Life and Tuya apps, it lets you remotely control four connected devices from anywhere, anytime. The device accepts input from USB 5V or DC 7–32V, giving you flexibility across different power setups.

What makes this relay appealing is its blend of independent channels, energy efficiency, and adaptable control methods. Each of the four channels can be operated separately, so you can tailor scenes for lighting, fans, doors, or other electronics without sprawling extra hardware. The unit’s power draw stays under 1 W in standby, with a quiescent current around 80 mA, which helps keep energy use low in a busy smart home.

Key capabilities at a glance

• Independent control of four devices for custom automation
• Low power consumption and robust load handling (up to 10 A per channel, < 250 V)
• Wide operating range: -40°C to 70°C and 40%–80% RH for varied environments
• WiFi connectivity (2.4 GHz) with Bluetooth remote and fixed-code 433 MHz RF support for offline control

Smart modes that adapt to daily life

The device offers three practical modes: a default self-locking mode to keep devices on or off until you change it, a momentary mode for a quick one-second pulse (ideal for brief activations), and an interlock mode that turns on one channel at a time while coordinating timing across others.

Scheduling, timers, and offline reliability

Set up single, repeating, countdown, or sunrise-based schedules to automate actions at precise times. Timers continue to run even if the network drops, and you can share these routines with family members for convenient access. Real-time status sync keeps you informed via the app.

Ecosystem and voice control

Seamlessly integrate with Alexa, Google Assistant, SmartThings, and Siri for hands-free operation. Use voice commands to activate lights, garage-related circuits, or window treatments, while keeping your home calm and controllable.

What you get and how to install

• DIN-rail friendly design in an ABS shell for secure installation
• 4-channel relay module with quick-start instructions
• Ideal for DIY automation projects such as garage doors, blinds, or outdoor lighting

Technical snapshot

• Input voltage: USB 5V or DC 7–32V
• Power consumption: < 1 W; quiescent current ~80 mA
• Load capability: < 10 A per channel; switch voltage < 250 V
• Operating environment: -40°C to 70°C; 40–80% RH
• Connectivity: WiFi 2.4 GHz, Bluetooth remote, 433 MHz RF (fixed code)
• Modes: Self-locking, Momentary, Interlock; scheduling and timers

Whether you’re automating a set of lights, a garage door actuator, or window shades, the MHCOZY 4CH WiFi Relay provides flexible control in a compact package. It’s designed to be easy to configure, yet capable enough to support thoughtful automation scenarios that align with your daily routine.