S4A-4CH-H 4-Channel Tuya Wi-Fi & 433MHz RF Smart Relay Switch with Housing
S4A-4CH-H, 4-CH, AC/DC 7-32V, 4x 10A Relays, 433MHz RF + Tuya Wi-Fi, 35mm DIN Rail, Enclosed Casing
The S4A-4CH-H is a versatile 4-channel smart relay module supporting AC/DC 7-32V, 433MHz RF, 4x 10A dry contacts, DIN rail clip, and Tuya Smart automation with inching, interlock, and self-locking modes.
Product Overview
Engineered for centralized electrical panels, smart irrigation systems, multi-door access controllers, and complex industrial automations, the S4A-4CH-H features four heavy-duty relays with independent control. Its DIN rail compatible housing snaps directly into standard electrical distribution cabinets, while dual Wi-Fi and 433MHz connectivity provide bulletproof control versatility.
Why Buy This Product
High Density 4-Channel Control
Consolidates four independent 10A dry contact relays into a compact footprint for electrical panels.
Modular DIN Rail Installation
Snaps cleanly onto standard 35mm top-hat rails inside distribution boards and breaker boxes.
Versatile Logic Modes
Configure each relay independently for pulsed latch triggering, continuous power, or motor interlock.
Best for These Applications
Centralized Electrical Panels
Organizes lighting groups, ventilation fans, and pumps inside residential or commercial breaker boards.
Multi-Zone Irrigation & Water Solenoids
Schedules 4 independent sprinkler zones with automated cycle timers and rain delays.
Key Advantages
- Standard DIN Rail Mounting:Direct snap-on compatibility with industrial 35mm DIN rail cabinets reduces wiring clutter.
- Multi-Protocol Hybrid Operation:Supports Tuya Wi-Fi cloud automation alongside local 433MHz RF remote controllers.
Frequently Asked Questions
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Weight | 0.16 |
| Shipping Weight | 0.22 |
| Channels Count | 4 |
| Switch Type | din-rail-switch |
| Relay Contact Type | Dry Contact (Passive Form C NO/COM/NC) |
| Mounting Type | 35mm DIN Rail Mount |
| Input Voltage | AC/DC 7-32V or Micro-USB 5V |
| Power Supply Options | DC Terminal Blocks (7-32V), Micro-USB 5V |
| Max Load Current | 10A per channel (16A Total) |
| Max Load Power | 2200W per channel / 3500W total |
| Relay Cycle Lifespan | ≥ 1,000,000 operations |
| Working Modes | Inching / Jog (0.5s - 3600s), Self-Locking, Interlocking |
| Interlock Mode Support | Yes |
| Wireless Protocols | Wi-Fi 2.4GHz, RF 433MHz |
| Rf Remote Supported | Yes |
| Rf Remote Capacity | 14 |
| App Support | Tuya Smart, Smart Life |
| Voice Assistant Compatibility | Amazon Alexa, Google Assistant |
| Timing Functions | Countdown Timer, Scheduled Timer, Circulate Timer |
| Housing Material | Flame-Retardant ABS V0 |
| Dimensions | 75 x 75 x 20 mm |
| Operating Temp | -20°C to 70°C |
| Operating Humidity | 5% to 90% RH |
| Stock | 7 |
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