Temperature and Humidity Monitor

Just bought a SensorPush https://www.sensorpush.com/ temperature and humidity sensor for $50 on Amazon. I bought it because I've been having a root rot issue and I had been constantly going to my grow room to check on things mostly of course T & H. I had seen this device many times in my Amazon search and finally broke down and bought one. And, let me first say this isn't all going to be flattering on this product and I in no way am affiliated with Sensor Push nor am I being compensated in any way.


I expected based on the photo on Amazon that the thing had a plug on the back that you couldn't see and it pluged directly into an outlet in the room which I didn't love but I was willing to forgo that to be able to check on my phone at any time on the rooms environment. I also loved the graphs giving you an in depth review of the environment changing over time.

When it arrived the first thing I noticed was its size. I was thinking the size of an older cell phone wall charging plug but instead it's about 1 1/2" square and less than 1/2 inch thick. SMALL. Also, NO PLUG. Now for those of you reading this thinking "this ToimmyDumper is kinda stupid" I say you are very perceptive and 100% correct! I mean what kind of moron would give himself a name like TommyDumper. Spoiler Alert: I earned that nick name in my twenties, and I mean earned it. So anyway I'm a moron and should have read up on this SenorPush better, I agree.

It gets even better though and part of the reason for this post. The Sensor push is a battery powered Bluetooth device that pings your mobile device with a temperature and humidity reading every minute. The app the keeps that data and you can see it numerically or choose a graph by the hour, day, week month or year. Cool Right!

There is a catch. Because it works via Bluetooth, the device and your phone must be within a range. Now for me I get perfect updates to my phone the floor above my grow. My phone has warned me that it is running in the background eating up battery life but I'm OK with that. The tough part is when you leave that range, your device cannot recieve the ping of data and it is lost forever.

Or is it?????? Well technically it is but there is a solution.

SensorPush sells a Gateway

The gateway I have not yet purchased but from my understanding this device will pick up that data for you hold it and transfer it to your device for about $100. How or when I do not yet know. Maybe one of you who already uses this SensorPush can enlighten us all but that's it. That's all I've got.

This is my TommyDumper signing off saying, remember to eat your beans and don't be an idiot like me and admit it to a group of strangers in a blog.
Peace.

Just to let you know dude.
You don’t need to be in constant Bluetooth range to get all the data.

The device constantly stores the last 2 weeks worth of data. And when you sync it should download anything your app doesn’t already have stored.

There are a bunch of different brands of this same sort of device all over Amazon. Pretty much all Chinese made (I imagine sensor push is no different before branding). I tried a couple this year.

They work well, problem is the software is dogshit for these rip-off ones. The Sensor Push app looks decent.

They also don’t seem to be the quickest at updating temp / humidity changes. I guess cos the sensors inside the casing and takes a while to even out with changing outside environment.

Also when I place two of my off brand ones side by side, there can be a 1-3C difference and 5-10% RH difference. Skeptical of accuracy.

There are some with external probes for logging with these same form of device. Never found one with twin logging capabilities which would be great.

I would love to try sensor push or one of the other less cheap brands. But $50 for one seems pretty steep.

I agree about the accuracy. I have the sensor within inches of my Titan Saturn 5 sensor and I'm not sure what to believe. They seem to be consistently 5F or 6F off. Now I do run Fluence 2P LED's about 6 inches off the canopy and the sensors are stuffed between the lights and the plants basically in the hottest possible spot but I'm not sure what to believe. The SensorPush allows you to calibrate right thru the app, I just adjusted the settings to match the Saturn 5 which is what I've always followed but now I question which one is most accurate.

To calibrate/test a rh% meter/sensor you can use distilled water and salt mixed to like wet sand.
Half cup of table salt mixed with distilled water and the sensor/meter placed in a zip seal bag and left for a couple of hours at 25c gives a known rh% of 75%.

Thank you so much Senor Star Dog for that tidbit. I'm on it!!

Star Dog said:

To calibrate/test a rh% meter/sensor you can use distilled water and salt mixed to like wet sand.
Half cup of table salt mixed with distilled water and the sensor/meter placed in a zip seal bag and left for a couple of hours at 25c gives a known rh% of 75%.

Click to expand...

How important is it to be at 25C exactly for a few hours? I am just as skeptical of my temperature sensors as my humidity ones!

Also is dehumidifier water close enough to distilled to use?

Stoned Whale said:

How important is it to be at 25C exactly for a few hours? I am just as skeptical of my temperature sensors as my humidity ones!

Also is dehumidifier water close enough to distilled to use?

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I'm not sure tbh I think it would be down to the sensitivity of the probe/sensor but it does give you a figure to add or subtract from that's very close.

I bought the sensor push and am very happy myself. Gives me reliable alerts when the temp or humidity goes outside my preset range

Nice posts by you @TommyDumper and @Stoned Whale ...... Interesting to know....

Star Dog said:

To calibrate/test a rh% meter/sensor you can use distilled water and salt mixed to like wet sand.
Half cup of table salt mixed with distilled water and the sensor/meter placed in a zip seal bag and left for a couple of hours at 25c gives a known rh% of 75%.

Click to expand...

This is 100% accurate, and it is how cigar smokers calibrate their humidifiers. I've done it myself to calibrate our ancient analog gauges. I just used regular tap water, and it worked fine.

Has anyone found a budget one that they would recommend?
I can't justify spending a lot of money it's not essential or even needed, it would just be nice to be able to look at temp/rh without having to switch of lights and unzip a tent.
There's an inkbird one for £30, inkbird is a brand I recognise in growing circles but idk if its any good or not?
£29 without the display and remote sensor £35 with them?

Star Dog said:

Has anyone found a budget one that they would recommend?
I can't justify spending a lot of money it's not essential or even needed, it would just be nice to be able to look at temp/rh without having to switch of lights and unzip a tent.
There's an inkbird one for £30, inkbird is a brand I recognise in growing circles but idk if its any good or not?

Inkbird Data Logger for sale | eBay

Find great deals on eBay for Inkbird Data Logger. Shop with confidence.

www.ebay.co.uk

£29 without the display and remote sensor £35 with them?

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I would bet they are all using the same cheap internals coming from same place in China.

Find out what app it uses and check out the reviews. Ultimately the apps are what separate these devices. The usability of the ones I’ve tried are terrible. Proper useless.

I'm going to just toss this out there, if any of you guys are interested. It's quite a read, and goes into more involved (and expensive) stuff like moniters and controllers. Still, prices aren't excessive. It's a great thread for those kind of things....

It ooks great to me but I've nothing for comparison.
Skip to 5.10 if You’ll see the app.

Star Dog said:

It ooks great to me but I've nothing for comparison.

Skip to 5.10 if You’ll see the app.

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i just had a quick look at reviews on the App Store and it doesn’t look good but a lot is crashing etc so maybe be fine if it actually runs!

I can safely say this- I'd trust ANYTHING Tint posts. Even if he is OP of it. Don't matter....

Dougnsalem said:

I can safely say this- I'd trust ANYTHING Tint posts. Even if he is OP of it. Don't matter....

Click to expand...

Thanks Dougnsalem

My rule. Never take my word for it. If one trusts....one must verify. I try to help.

There are many options out there. Finding what works is for each to have fun with.

I went ahead and ordered the inkbird data logger, if I've any hassle with it I'll return it, if it works as expected then I'll be delighted with it, the software layout, graphs, info etc looks ideal.

I received my data logger yesterday and I'm loving it, it can pick up on the slightest of changes to fan/ducting placement, I can fine tune the exact speed of the fan for the absolute optimum rh/temp for dialing in a grow its priceless it measures down to 00.00.

Downside! my rh% has been 5% above what I thought it was, 50/55% is really 55/60% I'm a bit more concerned with that I preferred the blissful ignorance of the other reading lol

@TommyDumper thanks for posting I'd never thought about buying one until your post encouraged me to look into them.