CAO GADGETS LLC

Great stuff easy to use at home.

I've purchased 12 Wireless Sensor Tag (13-bit Temperature and Humidity) and I'm a satisfied customer since 2014!

Nice and easy to use.the only thing they should work on it is the battery live for commercial use. 3.5 volts should be use
Louis

Great tags, I have them all over the house (including the refrigerator and freezers) to check temps. And have critical doors motioned sensors alarmed.

These are incredibly handy, especially since new fridges and freezers tend to die. Irritating to get a message as the are crashing, but WAY better than not.

I have been using the sensor tags for years to monitor warehouse and 7 commercial coolers. I keep 9 tags operating on average with 6 tag managers. The system works great when it is all up and running. I have not found anything comparable or better for my needs. I plan to stick with this company, as their hardware is solid, customer service responds quickly, and they have been around for many years. Very happy to have found them

This review is for the 13 bit tag. I have five of them and they have been running for over 4 years without any failures.

Tags are reliable and accurate to spec. They can be power hungry if you have the ping time interval too short. A typical coin cell (Panasonic or EverReady) lasts about 3-4 months with a 5 minute ping time. Accuracy between units is about 0.5 deg. F to about 1 deg. F. Absolute accuracy was not verified, but there is a measurement difference between sensors and between the sensor and two Type K thermocouple probes I have. Difference is about +/- 1 deg. F.

Don't bother trying to use them outside, even in a protected space such as inside a shed. The humidity on foggy and rainy days will exceed the specification of <95% RH. They work well in a refrigerator or freezer, but the distance to the base unit is severely degraded due to the shielding qualities of the fridg's metal exterior. When placing the base unit, that must be taken into account. Placing them on a metal surface will make communications directional, so try to stick them on a wood, plastic or glass surface. Placing them underground such as in a root cellar or bunker will drastically reduce communications distance or possible stop it.

The sounder is useful for locating them if put in an odd location and you forgot to rename them. Using the "Ping xx number of times" while looking for them is very helpful. Note that batteries should be changed as soon as you get an email to change the battery - in case you need to find it.

The cellphone app is nice. It is definitely useful for remote sensing and control.

Currently I use them for freezers, refrigerators and interior home temperature monitoring.

Hit or miss. External Power Sensor's have been awesome but the outdoor probes all fail even the replacements. There does not seem to be much development activity going on either.

We use the Wireless Tag to monitor our vaccine fridges in our medical practice. Works perfect, no complaints, does exactly what it's supposed to. Also really like the push feature that gives me an email and notification if the fridge is out of range.

Owned these tags since 2015 they still work perfectly - impressive dataset after 7 years and the graphing functionality is excellent - all data can be easily downloaded. Fabulous tech that's been around longer than the rest!

Wireless Tag sensors are great for multi sensor deployments. Much cheaper than the alternatives with very easy to access data.

The wireless temperature monitoring system is great. It allows me to monitor the 20 temperature sensors we have in refrigerators and freezers remotely from wherever I am. I also receive e-mails and texts when any unit is out of the proper temperature range. I highly recommend this motoring system and I will buy more sensors when needed in the future.

Used the sensor to track temperature for my second home. Used the historical metrics for tracking trends. Battery lasted thru the winter. Planning on several more motion sensors.

I have been using these products for years, and they are literally key to my every day life. The keep me informed of the temperatures of various heating and water stores, so I know when to light our biomass boiler. Without the wireless tags, it would be pure guesswork, and would cost me tons extra in gas.

I've got 5 wireless tags and a tag manager for 2 years now and I am impressed how reliable they are. The small size and the ease of use make them a perfect base for home automation. The IFTTT integration allows the tags to operate other smart gadgets bg triggering actions based on light, motion, temperature and humidity. Excellent product and service!

The datalogger works relly fine. Control software allows you to get maximum profit of the device.

Wireless Tags work great. I’ve been using one of the water sensors to monitor for a hot water tank leak and I found a problem before it became a disaster. The new water sensors don't have a probe but putting it on the floor under the water heater should achieve similar results. The old water sensors didn’t have a replaceable battery which makes them ‘disposable’ when the battery does die and this is kind of a waste. The new water sensors seem to have more flexibility but it would be very nice to have a "replaceable soil probe" that could be stuck in the dirt to measure plant soil moisture. Just plopping the sensor on top of the dirt has not worked all that well for me. I'm also not sure how well just setting the sensor "near" the hot water heater or washing machine will work. I’ve also been using a temperature sensor as a freezer thaw alarm. I switched to using the outdoor/probe sensor for the freezer after experiencing short battery life with the tags themselves. That has solved the frozen battery problem but now I'm having difficulty with what battery voltage should be considered "dead. " The probe has a different battery voltage but it seems that 3.1v is pretty much the "dead" zone. Last wish was a way to integrate it better into my home automation system. The URL calling is useful, especially since it can all run locally, cloud free! It would be much nicer however to have it make that call for "everything" and let me sort out what to do with the information. Having to go through all the different tag types and figure out what URL's to call is kind of a pain. It works but there's room for improvement. My home automation can do something like have a water heater leak shut off the water main. Or dry soil start a pump to provide a fixed amount of water.

Works as advertised and very well so. Graphics and interface are excellent, exemplary in fact. Highly recommended!

Excellent software and easy to use and install. Not so convenient in case if you what a single monitoring point, but great for multipoints monitoring.

Very good working and stable sensors. Good interface for web and smartphone. IFTTT works fine. I have had them many years now. Downside:
2 out of 12 sensors are dead now.