# Aqara Dual relay module T2 interlock mode

**URL:** <https://forum.ewelink.cc/t/aqara-dual-relay-module-t2-interlock-mode/139373>\
**Category:** eWeLink CUBE\
**Tags:** zigbee, ihost\
**Created:** [February 24, 2025, 10:31am UTC](https://forum.ewelink.cc/t/aqara-dual-relay-module-t2-interlock-mode/139373 "2025-02-24T10:31:51Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![wanvos](https://avatars.discourse-cdn.com/v4/letter/w/65b543/32.png) [@wanvos](https://forum.ewelink.cc/u/wanvos)\
**Post date:** [February 24, 2025, 10:31am UTC](https://forum.ewelink.cc/t/aqara-dual-relay-module-t2-interlock-mode/139373/1 "2025-02-24T10:31:51Z")

</div>

Hi and thanks for the continued support !

I recently purchased an [Aqara LLKZMK12LM](https://www.zigbee2mqtt.io/devices/LLKZMK12LM.html#aqara-llkzmk12lm) Zigbee 3 module and was hoping to use it to control a 24VDC electric curtain using my iHost.

The module shows up in eWelink CUBE and a few of it’s settings are available but I cannot view or control the “Interlock” setting listed on the above link.

Interlock prevents both relays being on at the same time. That is to prevent prevent powering the motor in both directions at the same time and burning it.

Is there any plan to support this setting or could you add it ? I’m happy to share logs or specific device outputs if it helps.

---

<div class="post-metadata">

**Author:** ![SuiKa](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.ewelink.cc/suika/32/8656_2.png) [@SuiKa](https://forum.ewelink.cc/u/SuiKa)\
**Post date:** [February 25, 2025, 7:42am UTC](https://forum.ewelink.cc/t/aqara-dual-relay-module-t2-interlock-mode/139373/2 "2025-02-25T07:42:33Z")

</div>

We have no plan for supporting interlock so far.  
But your request is noted, we’ll see if we can support it in the future version.  
For now, maybe smart scene might fullfill your need to interlock?

---

<div class="post-metadata">

**Author:** ![ward](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.ewelink.cc/ward/32/10437_2.png) [@ward](https://forum.ewelink.cc/u/ward)\
**Post date:** [February 25, 2025, 7:47am UTC](https://forum.ewelink.cc/t/aqara-dual-relay-module-t2-interlock-mode/139373/3 "2025-02-25T07:47:43Z")

</div>

Use Node-Red to set two flows:

```auto
IF Ch1 is on

AND Ch2 is on

THEN Turn off Ch2

```

```auto
IF Ch2 is on

AND Ch1 is on

THEN Turn off Ch1

```

If you have aqara hub like M1s/M2/M3, set it on Aqara app then add it to iHost via Matter

---

<div class="post-metadata">

**Author:** ![wanvos](https://avatars.discourse-cdn.com/v4/letter/w/65b543/32.png) [@wanvos](https://forum.ewelink.cc/u/wanvos)\
**Post date:** [February 25, 2025, 11:53am UTC](https://forum.ewelink.cc/t/aqara-dual-relay-module-t2-interlock-mode/139373/4 "2025-02-25T11:53:18Z")

</div>

Thanks for considering my request @SuiKa.

Thanks for the workaround @ward I actually considered the manual software workaround but I would need to be certain that the Ch1 ON an Ch2 OFF are conveyed within the same RF message. Or it would just take one lost message anytime, or a side case after a power cut to burn the motor and generate significant hardware damage.

Can you confirm that if I purchase an Aqara hub, pair the device, set interlocking on, pair it again with the iHost it will keep it’s settings?

---

<div class="post-metadata">

**Author:** ![ward](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.ewelink.cc/ward/32/10437_2.png) [@ward](https://forum.ewelink.cc/u/ward)\
**Post date:** [February 26, 2025, 1:44am UTC](https://forum.ewelink.cc/t/aqara-dual-relay-module-t2-interlock-mode/139373/5 "2025-02-26T01:44:26Z")

</div>

> [@wanvos](#):
>
> Can you confirm that if I purchase an Aqara hub, pair the device, set interlocking on, pair it again with the iHost it will keep it’s settings?

In this case, the device’s managed by Aqara Hub/platform, iHost just controls them locally via Matter. You can ask Aqara for the info before any purchase.

---

<div class="post-metadata">

**Author:** ![wanvos](https://avatars.discourse-cdn.com/v4/letter/w/65b543/32.png) [@wanvos](https://forum.ewelink.cc/u/wanvos)\
**Post date:** [February 26, 2025, 1:35pm UTC](https://forum.ewelink.cc/t/aqara-dual-relay-module-t2-interlock-mode/139373/6 "2025-02-26T13:35:27Z")

</div>

Thanks