S4A-G1 Wi-Fi Wireless Smart Relay Module for Access Control Systems
S4A-G1, Access Control Relay, DC 5-24V, Wi-Fi 2.4GHz + 4G/3G App Unlock, Maglock & Strike Integration
The S4A-G1 is a dedicated smart access control Wi-Fi relay module supporting DC 5-24V input, multi-network app unlocking (Wi-Fi, 4G/3G/2G), and direct connectivity with magnetic locks, electric strikes, and exit push buttons.
Product Overview
Engineered specifically for physical security and access control installations, the S4A-G1 bridges traditional electric strikes, electromagnetic locks, and automatic doors to the cloud. By connecting across power supplies and request-to-exit inputs, it provides property managers and homeowners with instant mobile app door release, scheduled unlock periods, and remote visitor opening from anywhere worldwide.
Why Buy This Product
Turn Any Electric Lock Smart
Adds instant smartphone opening to any existing magnetic lock or strike without replacing door hardware.
Worldwide Mobile Unlock
Buzz in couriers, guests, or staff remotely using 4G/5G mobile internet from anywhere in the world.
Simple 4-Wire Wiring
Wired parallel across the existing exit button terminals for hassle-free 10-minute setup.
Best for These Applications
Office Entrance Doors
Allows receptionists and managers to open the main entrance door from their desks or mobile phones.
Residential Security Gates
Lets homeowners grant delivery drivers gate access without walking to the intercom station.
Key Advantages
- Plug-and-Play Door Integration:Connects directly to the PUSH and GND terminals on standard access control power boxes.
- Passage Mode Timers:Schedule doors to remain unlocked during business hours and lock down automatically at closing.
Frequently Asked Questions
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Weight | 0.09 |
| Shipping Weight | 0.14 |
| Channels Count | 1 |
| Switch Type | relay-module |
| Relay Contact Type | Dry Contact (Passive Form C NO/COM/NC) |
| Mounting Type | Surface Screw Mount |
| Input Voltage | DC 5-24V |
| Power Supply Options | DC Terminal Blocks (5-24V) |
| Max Load Current | 10A / 30VDC |
| Max Load Power | 300W DC / 2200W AC |
| Relay Cycle Lifespan | ≥ 1,000,000 operations |
| Working Modes | Inching / Pulse Door Unlock (1-10s), Continuous Unlocked (Hold Open) |
| Inching Duration Range | 1s to 10s configurable unlock pulse |
| Wireless Protocols | Wi-Fi 2.4GHz (IEEE 802.11 b/g/n) |
| App Support | Tuya Smart, Smart Life |
| Voice Assistant Compatibility | Amazon Alexa, Google Assistant |
| Timing Functions | Passage Mode Scheduling, Auto-Lock Countdown |
| Housing Material | Flame-Retardant ABS V0 |
| Dimensions | 65 x 34 x 19 mm |
| Operating Temp | -20°C to 65°C |
| Operating Humidity | 10% to 90% RH |
| Stock | 2 |
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