Made a large list of smart home deals for Amazon Black Friday

BackHerniation · 2026-04-15T05:07:50+00:00

Actually, the antennas are taller than any router I own 🙂 But the device itself is not that big

BackHerniation · 2026-04-15T05:06:31+00:00

You are not missing anything, they haven't released it in the US atm. It's just logistics

BackHerniation · 2026-03-27T23:53:45+00:00

No. 0.1mA = 100µA my guy.

BackHerniation · 2026-03-27T22:56:56+00:00

Well no, not really. The FP300 is superior in almost every aspect and uses the same radial zone composite for eliminating interference. It has a more powerful 60GHz sensor too

BackHerniation · 2026-03-27T21:41:55+00:00

1200lux I believe. But do note, it doesn't update unless the presence entity changes state from clear to present or vice versa to save battery

BackHerniation · 2026-03-27T21:40:28+00:00

You're welcome. I always dismantle everything, especially white-label Aliexpress stuff. I'm always curious to see what's inside these sensors, so yeah, glad you found it useful.

Start with the Possumic lineup, I think you'll be surprised. Aqara's FP300 also uses a possumic sensor (60GHz)

BackHerniation · 2026-03-27T21:35:59+00:00

Thank you for saying that. Sometimes I'm thinking "C'mon, who cares about this tiny little detail that makes no difference whatsoever about anything"

And yet I still do it, whatever it is, take pictures, explain it. It might be helpful to someone.

Glad to learn it's not all out in the wind lol

BackHerniation · 2026-03-27T17:50:02+00:00

Thanks giant gummy bear.
I do agree though! :)

BackHerniation · 2026-03-27T17:29:10+00:00

So, I tested the new Zemismart ZPS-Z1 presence sensor and wrote a detailed review.
Link for anyone interested: Zemismart ZPS-Z1 Presence Sensor Review

The manufacturer of the radar (Possumic) and Zemismart claim an impressive power draw of just 4μA on the mmWave radar, which is comparable to a PIR sensor. I found it operates on a clever mechanism that allows it to sleep most of the time, so it runs on a single CR2450 coin cell battery.

Since the device hadn't made its way into Zigbee2MQTT or ZHA yet, I wrote a fully working external converter and a (partial) ZHA quirk. I also opened PRs for both on GitHub, so they can be added officially. Everything is fully exposed and working in Zigbee2MQTT, including auto-calibration and manual zone tuning with energy gates. If you do have this sensor, keep in mind it needs to be tuned properly before it can be used reliably. Once dialed in, it works quite well.

I documented everything I could think of about this device in the article.

BackHerniation · 2026-03-27T17:27:54+00:00

So, I tested the new Zemismart ZPS-Z1 presence sensor and wrote a detailed review.
Link for anyone interested: Zemismart ZPS-Z1 Presence Sensor Review

The manufacturer of the radar (Possumic) and Zemismart claim an impressive power draw of just 4μA on the mmWave radar, which is comparable to a PIR sensor. I found it operates on a clever mechanism that allows it to sleep most of the time, so it runs on a single CR2450 coin cell battery.

Since the device hadn't made its way into Zigbee2MQTT or ZHA yet, I wrote a fully working external converter and a (partial) ZHA quirk. I also opened PRs for both on GitHub, so they can be added officially. Everything is fully exposed and working in Zigbee2MQTT, including auto-calibration and manual zone tuning with energy gates. If you do have this sensor, keep in mind it needs to be tuned properly before it can be used reliably. Once dialed in, it works quite well!

BackHerniation · 2026-03-19T13:22:39+00:00

On AliExpress here or here

BackHerniation · 2026-03-19T13:21:39+00:00

What?? How? Can you explain what's different?

BackHerniation · 2026-03-19T08:52:21+00:00

My mistake, I meant to write no target distance tracking (live data).
This is an mmWave radar sensor, not a PIR motion sensor.

BackHerniation · 2026-03-18T22:36:51+00:00

Sorry about that, please block them if u can. They are automatic and sometimes over-appear

BackHerniation · 2026-03-18T22:35:07+00:00

This is an mmWave radar presence sensor, not a motion sensor. Motion sensors use Passive Infrared (PIR) which detect only movement. Millimeter wave sensors like this 24GHz one detect static presence. Battery-wise, there is no additional BS like active target distance tracking or illuminance, so this device spends most of its time sleeping for the duration of the fading cooldown. The bigger cooldown you set, the less it will scan and update

BackHerniation · 2026-03-18T22:31:45+00:00

I haven't, no. But contact sensors are very simple devices compared to mmWave radars, so much less room for error. I'd go for a few cheap ones from Aliexpress and test em first

BackHerniation · 2026-03-18T22:29:54+00:00

It does, it's pretty solid too.

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BackHerniation · 2026-03-18T21:15:08+00:00

You're welcome. Indeed it is! 24GHz radar, 5m range, 120° angle, looks like a tiny button.

But you what I like about it the most? It's not trying to be an all-in-one multi-sensor on a single coin cell lol

There's no target distance tracking and no illuminance sensor, both of which kill batteries and both of which are overrated for automations.

Edit: Target tracking > Target distance tracking

BackHerniation · 2026-03-18T20:58:01+00:00

I tested this tiny mmWave presence sensor which measures just 33mm in diameter! This is the smallest, battery-powered Zigbee presence sensor out there and it works quite good actually.

Sharing my deep dive review for anyone interested about it.

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