⚡ Zigbee Inching Relay Module DC1 — 1-Channel Dry Contact Switch
A 1-channel Zigbee dry contact relay module with inching (momentary) and self-locking modes. Perfect for gate motors, garage doors, electric locks, and other devices that need a brief pulse trigger or a sustained on/off. Works with eWeLink, Tuya/Smart Life, and Philips Hue Bridge. Zigbee protocol means it acts as a mesh router, extending your Zigbee network. Includes 433MHz RF remote support.
🔀 Choose Your Variant
⚡ Key Features
- 1-Channel Dry Contact Relay — one independent relay output (NO/COM/NC); switches connected loads without providing power (the relay is a switch, not a power source)
- Inching Mode (Momentary) — relay closes briefly (~0.7s) then auto-opens; perfect for triggering gate motors, garage door openers, and electric locks that need a quick pulse
- Self-Locking Mode — relay stays on/off until toggled; use for lights, pumps, or any device that needs sustained on/off control
- Zigbee Protocol — connects via Zigbee to your hub (eWeLink, Tuya, Philips Hue Bridge); acts as a Zigbee router to extend your mesh network
- 433MHz RF Remote — also supports pairing with 433MHz RF key fobs for local control without a phone or Zigbee hub
- Dual App Support — works with both eWeLink and Tuya/Smart Life apps; choose your preferred ecosystem
- Wide Voltage Input — powered by 5–32V DC or 90–260V AC (powers the board only; the relay output is a dry contact)
- Voice Control — Amazon Alexa, Google Assistant via eWeLink or Tuya integration
The relay outputs are dry contacts (NO/COM/NC). The power supply input (DC or AC) only powers the circuit board — it does NOT pass through to the relay output. You connect the relay contacts to your gate motor's trigger terminals, lock release, or other external circuit. This is not a mains switching relay.
🏠 What Can You Control?
Gate Motors
Wire the dry contact across your gate motor's trigger terminals. In inching mode, one tap in the app sends a brief pulse — exactly like pressing the remote button. Open or close your gate from anywhere.
Garage Doors
Same principle as gate motors. The DC1's inching pulse triggers the garage door opener just like the wall button does. Control it from your phone, voice, or automation.
Electric Locks
Trigger electric strike locks or magnetic locks. Inching mode releases the lock briefly, then it re-locks automatically. Perfect for access control and visitor entry.
Lights & Pumps
In self-locking mode, the relay acts as a standard on/off switch. Use it to control lights, irrigation pumps, or any device where you need sustained on/off via Zigbee.
📋 Technical Specifications
| Model | ST-DC1 (Zigbee + RF433) |
| 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 (sustained on/off) |
| Protocol | Zigbee 3.0 (acts as router) + 433MHz RF |
| Board Power | 5–32V DC or 90–260V AC |
| App | eWeLink or Tuya/Smart Life (iOS / Android) |
| Voice Control | Amazon Alexa, Google Assistant |
| Zigbee Hub Required | Yes (eWeLink or Tuya compatible hub) |
🔄 DC1 vs DC2 vs DC4 — Which One?
| Feature | DC1 | DC2 | DC4 |
|---|---|---|---|
| Channels | 1 | 2 | 4 |
| Inching | ✅ (~0.7s) | ✅ (0.5–60s) | ✅ (0.5–60s) |
| Self-Lock | ✅ | ✅ | ✅ |
| Interlock | ❌ | ✅ | ✅ |
| Best For | Single gate or garage | Gate + garage, or dual garage | 4 gates, complex setups |
❓ Frequently Asked Questions
Do I need a Zigbee hub?
Can I use it without the app, just with the RF remote?
What's the difference between inching and self-locking?
Will it work with my CENTURION / ET / GEMINI gate motor?
🤝 Need Help? We're Here for You!
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8 Wildebraam Street
Weltevreden Park, Roodepoort
Gauteng, 1709
Open Your Gate From Anywhere.
EACHEN Zigbee DC1 — 1-channel dry contact relay · Inching + self-lock · eWeLink / Tuya / Hue · R149