I got the round temperature/humidity monitor. It has humidity to 1 dec place – hurray! — but it is still imperfect. 😤
Let's go through them one by one.
||KAAC0005-001|RSH-TH03|XJM0472|TY400H| |---|+---|+---|+---|+---| |Size|51x51x16.5 mm|64x64x28 mm|60x63x25 mm|74x75x28 mm| |Weight|43.5g w/ batteries|71.5g w/o batteries, 140g w/|65.4 g w/o, 98.4 g w/|90.0 g w/| |Power|2 AAA batteries|3 AA batteries|3 AAA batteries|2 AAA batteries| |Temp precision|0.1°C|0.1°C|0.1°C|0.1°C| |Temp accuracy|± 0.5°C|± 0.5°C|± 0.5°C|± 0.3°C| |Humidity precision|1%|0.1%|1%|0.1%| |Humidity accuracy|± 5%|± 5%|± 5%|± 2%|
(Accuracy for TY400H is suspect.)
Note: all can toggle between °C and °F.
Features:
The way it works is very intuitive. It will sample every X mins, if the reading exceeds the threshold, it will report. It will also report at every sync interval, whether reading has changed or not — this is useful as a heart beat.
Battery can last 3+ weeks in frequent mode, 3+ months in low power mode. (Both at 3 min sampling period.)
It is small and light. It can be stuck on a wall without fear of falling off.
The only real flaw is that when the device is power-cycled, it reverts to low power mode, 1°C and 6% RH threshold (not sure about sampling period). You need to set it back to the mode you want.
If the router power-cycles, the device won't be able to connect to it until it is power cycled — it caches the connection credentials. I don't know if other battery-powered devices have the same issue.
No sync mode is not ideal, but still acceptable, except it has fixed threshold and they are too high: 1°C and 5% RH. Sampling period is unknown. (My guess: ~5 mins.)
Its reporting code is buggy. It sometimes skip reporting for hours, even though the readings have changed.
It uses 3 AA batteries, so it is big and heavy. Battery life is estimated to be < 2 months.
This would be perfect if it supports humidity to 1 dec place.
Shows date/time, but it is only updated when it synchronizes with Tuya Cloud. Set reporting interval to 60 mins? The time will be way off.
Battery is reported as states (e.g. high) instead of percentage.
Is reporting interval same as sampling period? Does it skip reporting if the reading is below threshold?
Test: after setting reporting interval to 60 mins, it still reports every ~5 mins if the readings exceed threshold.
Can adjust reported temperature/humidity. This allows a fleet of devices to report consistent readings — all low-end monitors should have this, because there is usually some variance. Very nice feature.
No threshold, so I presume the device will always report at every sampling period?
Test: after setting reporting interval to 60 mins, it still reports every ~5 mins if the readings exceed threshold. (Threshold is unknown, though.)
Battery life is estimated to be < 2 months.
I used S6 for 7 years before replacing it. It was stuck at Android 7.0 and more and more apps required min of Android 9 for security purposes. It was failing as well. I later repaired it, but it turned out I never used it again — and it died earlier this year.
My S22 will be 5 years old next year. I'll probably change then. Let's look at S26 spec first.
||S22|S25|S26| |---|+---|+---|+---| |Size|146.0 x 70.6 x 7.6mm|146.9 x 70.5 x 7.2 mm|149.6 x 71.7 x 7.2 mm| |Weight|168g|162g|167g| |Display|6.1"|6.2"|6.3"| |Resolution|2340x1080, 422 PPI|2340x1080, 416 PPI|2340x1080, 411 PPI| |Aspect ratio|19.5:9|19.5:9|19.5:9| |Screen-to-body|88.6%|91.1%|90.0%| |Camera|50 MP FL 23mm f/1.8<br>10 MP FL 70mm f/2.4<br>12 MP FL 13mm f/2.2|50 MP 24mm f/1.8<br>10 MP 67mm f/2.4<br>12 MP 13mm f/2.2|50 MP 24mm f/1.8<br>10 MP 67mm f/2.4<br>12 MP 13mm f/2.2| |Camera AR|4:3|4:3|4:3| |Selfie Cam|10 MP 26mm f/2.2|12 MP 26mm f/2.2|12 MP 23mm f/2.2| |WiFi|802.11ax dual|802.11be tri|802.11be tri| |Memory|8 GB|12 GB|12 GB| |Storage|128, 256 GB|128, 256, 512 GB|128, 256, 512 GB| |Battery|3700 mAh|4000 mAh|4300 mAh| |USB|Type-C|Type-C, DP 1.2|Type-C, DP 1.2|
S26 is starting to get too big for me.
I suspect S27 base model may go back to 64 GB due to high memory prices.
Unlike what is advertised, humidity has no decimal place. Argh, it is the whole reason I buy this!
||KAAC0005-001|RSH-TH03|XJM0472| |---|+---|+---|+---| |Size|51x51x16.5 mm|64x64x28 mm|60x63x25 mm| |Weight|43.5g w/ batteries|71.5g w/o batteries, 140g w/|65.4 g w/o, 98.4 g w/| |Power|2 AAA batteries|3 AA batteries|3 AAA batteries| |Temp precision|0.1°C|0.1°C|0.1°C| |Temp accuracy|± 0.5°C|± 0.5°C|± 0.5°C| |Humidity precision|1%|0.1%|1%| |Humidity accuracy|± 5%|± 5%|± 5%|
At least it is lighter.
Other than the disappointment over humidity, it is fine otherwise. Threshold can be as low as 0.3°C, 3% RH. Periodic update as short as 1 min, though I think 15 mins is good enough — remember, it will update if it exceeds the threshold.
I wonder if there is really a variant with humidity to 1 dec place. I suspect not.
Three different monitors, three different readings. (They have not acclimatized in this shot, so it is normal they show different readings.)
Temperature is pretty spot on. Humidity has a little variance.
I found yet another temperature/humidity monitor with 1 dec place. I saw this previously, but gave it a pass cos it is rather big. I'm quite sure it has 1 dec place — there are real photos of it.
Interestingly, it supports both battery and USB power.
This will be the last one I get... not going to buy anymore.
I have waited an eternity for this. I have bought Power Grid resource upgrade parts in the past, but I could never find a good set of power plants.
Got the whole set for 66 yuan (S$12.36). The plants have their own 3D printed containers.
This seller has 18 power plant designs in all. Very creative! They look even better painted, but you need to DIY. I got this set for 45 yuan (S$8.43). He has resources as well, but they don't look as nice.
Someone found a life hack. Instead of an overpriced air purifier, simply buy the air filter (which is also costly) and put a fan over it. After all, isn't that what an air purifier really is?
This is a good idea, except it is not as good as you think.
First, it moves much less air. The reason is simple: the fan is smaller. An air purifier has a bigger fan. That's why it is so big. Half of it is the air filter. The other half is the fan.
Second, the fan speed is usually fixed, so you are stuck with one level all the time. If you intend to run it 24/7, I'll suggest using a low-powered fan so that it is silent. Higher-end models are variable speed.
Third, it needs to be air-tight between the fan and the air filter, else the air will just enter through the gaps, i.e. the path of least resistance.
In summary:
An example: the Philips AC3033 air purifier costs around S$550 new. It is very expensive for what is really a fan and a filter. Its filter costs S$125 (at full price), though it is rated for 3 years lifespan, so $42 per year.
