⚡ Zigbee Inching Relay Module DC2 — 2-Channel Dry Contact Switch
A 2-channel Zigbee dry contact relay module with inching (momentary), self-locking, and interlock modes. Two independent relay outputs let you control two separate devices — like a gate and garage, or a double garage — from one module. Adjustable inching time from 0.5 to 60 seconds. Works with eWeLink, Tuya/Smart Life, and Philips Hue Bridge. Zigbee mesh router + 433MHz RF remote support.
🔀 Choose Your Variant
⚡ Key Features
- 2-Channel Dry Contact Relay — two independent relay outputs (NO/COM/NC each); control two separate devices from one module
- Inching Mode (Adjustable 0.5–60s) — relay closes for a configurable duration then auto-opens; much more flexible than the DC1’s fixed 0.7s pulse
- Self-Locking Mode — relay stays on/off until toggled; for lights, pumps, and sustained on/off applications
- Interlock Mode — when one relay turns on, the other automatically turns off (and vice versa); ideal for motor direction control (forward/reverse) or curtain open/close
- Zigbee Protocol — Zigbee 3.0 with mesh router function; extends your network while providing smart control
- 433MHz RF Remote — pair an RF key fob for local physical control without needing a phone or hub
- Dual App Support — eWeLink and Tuya/Smart Life; also compatible with Philips Hue Bridge
- Wide Voltage Input — 5–32V DC or 90–260V AC (powers the board; relay outputs are dry contacts)
- Voice Control — Alexa, Google Assistant via eWeLink or Tuya
The relay outputs are dry contacts (NO/COM/NC). The power input only powers the circuit board. Connect the relay contacts to your gate motor’s trigger terminals, lock release, or other external circuit.
🏠 What Can You Control?
Gate + Garage
Channel 1 triggers your gate motor, Channel 2 triggers your garage door. One module, one app — open both as you arrive home. Set an eWeLink scene: “Arriving home → open gate → open garage.”
Double Garage
Two garage doors? Wire each to a channel. Control them independently from the app, or set up scenes to open/close both simultaneously.
Motor Direction (Interlock)
In interlock mode, the two relays work in opposition — perfect for controlling a DC motor’s direction (forward/reverse). Use for linear actuators, awnings, or simple curtain motors.
Fan Speed (Interlock)
Use interlock mode to configure a 3-wire high/low fan speed setup. One relay for low speed, one for high — switching one automatically disengages the other.
📋 Technical Specifications
| Model | ST-DC2 (Zigbee + RF433) |
| Channels | 2 (independent dry contact relays) |
| Relay Output | Dry contact: NO / COM / NC (per channel) |
| Relay Rating | 10A 250VAC / 10A 30VDC (per relay) |
| Work Modes | Inching (0.5–60s adjustable) · Self-locking · Interlock |
| Protocol | Zigbee 3.0 (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 fixed | 0.5–60s adjustable | 0.5–60s adjustable |
| Self-Lock | ✅ | ✅ | ✅ |
| Interlock | ❌ | ✅ | ✅ |
| Best For | Single gate or garage | Gate + garage combo | 4 gates, complex setups |
❓ Frequently Asked Questions
What’s the advantage of DC2 over DC1?
Can I use the two channels independently?
What is interlock mode?
Does it need a Zigbee hub?
Can I adjust the inching pulse duration?
🤝 Need Help? We’re Here for You!
Visit Us
8 Wildebraam Street
Weltevreden Park, Roodepoort
Gauteng, 1709
Gate + Garage. One Module. One App.
EACHEN Zigbee DC2 — 2-channel dry contact relay · Adjustable inching · Interlock mode · eWeLink / Tuya
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