4 Channels Smart Relay Switch with Dry Contact, WiFi Bluetooth APP Control Module for Lights/Appliances, Voice Automation with Alexa & Google Home, 10A per Channel, AC110V/DC5V 12V 24V Compatible

Price: GBP16.26 - GBP15.44
(as of Jun 03, 2026 01:32:08 UTC – Details)

Product description

S42 4-Channel Smart Relay Switch

Control four devices independently via WiFi/Bluetooth! This compact relay switch supports AC 100-240V or DC 5-24V input (never concurrently), delivering up to 10A per channel (NO mode) for lights, motors, or valves. Seamlessly connect to Tuya/Smart Life App for voice commands (Alexa/Google Home), scheduled timers, and group actions. An additional 433MHz RF remote control can be added as a backup control method. It features a fire-resistant and flame-retardant casing and supports hanging installation. It is ideal for use in smart home, industrial automation, and energy management scenarios.

Parameters:

Model: S42

SPC: < 1W

Input: AC 100-240V ~ or DC 5-24V (Do not use both concurrently)

Switching Current Per Channel: <10A(NO), <7A(NC)

Wireless: WiFi 2.4Ghz 802.11 b/g/n+Bluetooth

RC: RF 433.92 Mhz

Product Size: 3.46 × 2.52 × 0.98 in

FOUR INDEPENDENT CHANNELS Controls 4 devices up to 10A per channel in NO mode or 7A in NC mode; Or use some of the relays to achieve special functions; Safely drive lights, motors, solenoid valves, and appliances.
DUAL-CHANNEL VOLTAGE INPUT Supports AC 100-240V or DC 5-24V input (Warning: Do not use both concurrently); Compatible with common input voltages such as AC 110V, DC 5V, DC 12V, and DC 24V.
DUAL WIRELESS CONTROL WITH VOICE AUTOMATION Connects via 2.4GHz WiFi and Bluetooth to Tuya Smart/Smart Life App; Enables voice commands through Alexa and Google Home; Includes RF 433MHz remote for physical backup control (remote pairing guided in manual).
RICH REATURES The device supports jog mode and interlock mode, and also supports settings such as countdown, schedule, circulate, and random setting.
WIDE RANGE OF APPLICATION SCENARIOS Thanks to the DIY nature of the device, you can easily create various DIY smart home application scenarios. For example, you can convert your garage door to smart remote control, pair it with a water pump to achieve automatic water management for swimming pools, or build an automated small garden irrigation system, and so on. Moreover, you can also share these with your family members for use.