Zigbee External Door Contact Sensor (recessed), hardwired with battery backup

Devices & Integrations
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Hello, it’s the end of 2024, and I wanted to ask if anyone can recommend a single Zigbee external door contact sensor (recessed), with hardwired power (low voltage DC is acceptable) plus battery backup.

I am looking for an alternative to the " Aeotec SmartThings Multipurpose Sensor - Zigbee - Door and Window Sensor, Temperature Sensor". The particular door has problems where the sensor or the corresponding magnet keep on falling off, and it is in a sufficiently inconvenient place that people forget or neglect to replace the battery timely. At the same time, the door itself has low voltage DC power routed right next to the frame.

In the Z-Wave world, the following products come very close:

  • Zwave Door Sensor Aeotec Recessed Door Sensor 7: drill one piece into the door and one piece into the door frame. The battery is inside. This is not very conducive to hard-wiring.

  • Ecolink DWZWAVE2.5-ECO Z-Wave Plus Door/Window Sensor: attach to wall and attach any standard, wired “recessed magnetic reed switch” to the internal terminals. Drill through casing if needed. This works but still does not address the battery vs. hardwired issue.

Based on prior experience, I have this possible Zigbee solution:

  • MHCOZY ZG-001 Channel 5V 12V ZigBee Smart Relay Switch,Adjustable Selflock and Momentary Working Mode. Attach wires to standard magnetic reed sensor embedded in door. Put the whole thing in a recessed box inside the wall next to the door. The MHCOZY ZG-001 is powered by 5V DC or AC/DC 7-32V. In this case, I can supply it with 24VDC (there is a 24VDC power supply close to the door in the wall). All that is needed is some very small lithium battery backup solution that takes 24VDC in and 7-32VDC out.

Is the last option the best/only way to do this with Zigbee with SmartThings as close to “off the shelf” as possible?

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Also with Aeotec you will change battery every 2 years. I don’t even remember when was changed last time and it’s on 90%. No need to be hardwired.
Edit: just checked Amazon orders. I can believe it. Got battery for it in October 2021. That’s over 3 years.

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Thanks for the Aeotec Recessed Door Sensor 7 plugs :slight_smile: However I did ask for Zigbee…

MHCOZY ZG-001 is the wrong product. That is a relay (output), not a sensor (input).

I did find this product ZigBee Module ZM-10 - ZigBee Relay I/O Module: 2 relay outputs, 1 digital input, 1 digital output, 3 analog inputs, 2 digital inputs, 1 meter input, built-in temperature sensor, DC power supply ZigBee Module ZM-10 which has both battery and continuous power, but it is very industrial/off the beaten path.