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WiFi Inching Relay Momentary Switch Module ST-DC1 (Tuya SmartLife APP)

Name: WiFi Inching Relay Momentary Switch Module ST-DC1 (Tuya SmartLife APP)
Brand: EACHEN
SKU: ECHTUYSWI012VSV1G0100
Availability: InStock

Original price was: R 135,00.Current price is: R 119,00.

SKU: ECHTUYSWI012VSV1G0100 Category: Relay Modules & Controllers Tags: 1-channel,, dry-contact,, Eachen,, eiferer,, garage,, gate,, Inching,, momentary,, no-hub,, relay,, Self-Locking,, smart-home,, SmartLife,, tuya,, wifi Brand: EACHEN

⚡ EACHEN ST-DC1 — WiFi 1-Channel Inching / Self-Locking Relay Module (Tuya SmartLife)

A compact 1-channel WiFi dry contact relay module with inching (momentary) and self-locking modes. The ST-DC1 runs on the Tuya SmartLife platform — perfect for triggering gate motors, garage doors, electric locks, and other DC-powered devices. Connects directly to WiFi — no hub or bridge needed. Controlled via the Tuya SmartLife app with Alexa and Google Assistant support.

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Free Delivery

Orders over R2,500

🇿🇦

Local Stock

Ships from Gauteng

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WiFi Direct

No Hub Needed

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1 Channel

DC 5V Input

🔀 Tuya WiFi Inching Relay Range

ST-DC1 · 1 Ch · Tuya
ST-DC2 · 2 Ch · eWeLink

⚡ Key Features

1-Channel Dry Contact Relay — single relay output (NO/COM/NC); acts as a switch only — does not provide power to the connected device
Inching Mode (Momentary) — relay closes briefly (~0.7s) then auto-opens; perfect for pulsing gate motors, garage door triggers, and electric lock releases
Self-Locking Mode — relay stays on/off until toggled; for lights, pumps, 12V LED strips, and sustained on/off control
Tuya SmartLife Platform — works with the free Tuya Smart or SmartLife app on iOS and Android
WiFi Direct — No Hub — connects straight to your 2.4GHz WiFi network; no Zigbee hub, bridge, or gateway required
DC 5V Input — powered via USB 5V or any 5V DC supply
Voice Control — Amazon Alexa and Google Home compatible
Timers & Schedules — set up to 8 single/repeat/countdown timers per device via the app
Device Sharing — share control with family members via the Tuya SmartLife app
IFTTT Support — create advanced automations via the SmartLife IFTTT integration

⚠️ Dry Contact Relay — No Power Output!
The relay output is a dry contact (NO/COM/NC). The DC 5V input only powers the WiFi board — it does NOT pass through to the relay. Connect the relay contacts across your gate motor’s trigger terminals or device switch circuit.

🏠 What Can You Control?

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Gate Motors

Wire NO + COM across your gate motor’s trigger terminals. Set inching mode. One tap in the app sends a brief pulse — opens or closes the gate from anywhere in the world.

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Garage Doors

The inching pulse triggers the garage opener just like pressing the wall button. Power the ST-DC1 from a USB 5V phone charger near the opener.

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Electric Locks

Trigger electric strike or magnetic locks. Inching mode releases briefly then re-locks. Set SmartLife scenes: doorbell press → unlock for 5 seconds.

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12V DC Devices

In self-locking mode, switch 12V LED strips, pumps, fans, or any low-voltage device on/off via the app or voice command.

🇿🇦 SA Gate Motor Tip: Most SA gate motors (CENTURION, ET, GEMINI) have trigger terminals. Power the ST-DC1 from a USB phone charger nearby, wire the relay across the TRIG terminals, set inching mode. Done — your gate is now smart. Open it from anywhere, share access with family via SmartLife, and set schedules.

🔄 ST-DC1 (Tuya) vs eWeLink SV — Which One?

Both are 1-channel WiFi inching relays. The ST-DC1 uses the Tuya SmartLife platform — ideal if you already use Tuya devices at home. The eWeLink SV uses the eWeLink/SONOFF platform and accepts DC 5–24V input. Choose based on which app ecosystem you prefer.

📋 Technical Specifications

Model	EACHEN ST-DC1
Platform	Tuya Smart / SmartLife
Channels	1 (single dry contact relay)
Relay Output	Dry contact: NO / COM / NC
Relay Rating	10A 250VAC / 10A 30VDC
Work Modes	Inching (momentary ~0.7s) · Self-locking (toggle)
Protocol	WiFi 2.4GHz (direct, no hub)
Board Power	DC 5V (USB or 5V adapter)
App	Tuya Smart / SmartLife (iOS & Android)
Voice Control	Amazon Alexa, Google Assistant
IFTTT	Supported via SmartLife
Hub Required	No — WiFi direct

❓ Frequently Asked Questions

Does this need a Zigbee hub?

No — the ST-DC1 connects directly to your 2.4GHz WiFi network. No hub, bridge, or gateway required. Just the free Tuya Smart or SmartLife app.

What’s the difference between inching and self-locking?

Inching closes the relay briefly (~0.7s) then auto-opens — like pressing a button. Use this for gate motors and garage doors. Self-locking keeps the relay on until you toggle it off — use this for lights, pumps, or any device that needs sustained on/off control.

How do I power it?

The ST-DC1 runs on DC 5V — a standard USB phone charger works perfectly. Plug it into any USB wall adapter or powerbank near your gate motor or garage door opener.

Does the relay output provide power?

No — the relay is a dry contact switch. It opens and closes a circuit but does not provide voltage. Wire the relay contacts across the trigger terminals of the device you want to control.

What’s the difference between ST-DC1 (Tuya) and the eWeLink SV?

Both are 1-channel WiFi inching relays. The ST-DC1 uses the Tuya SmartLife app. The eWeLink SV uses the eWeLink app and accepts a wider voltage range (DC 5–24V). Choose based on your preferred app ecosystem.

🤝 Need Help? We’re Here for You!

📞

Call Us

Jesse: 071 678 8719
Jason: 084 505 7481

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Visit Us

8 Wildebraam Street
Weltevreden Park, Roodepoort
Gauteng, 1709

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Email

info@eiferer.co.za

Open Your Gate From Anywhere.

EACHEN ST-DC1 — 1-channel WiFi dry contact relay · Tuya SmartLife · Inching + self-lock · R179

Weight	43 kg
Title	Default Title

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