Hello
I am looking to hook up my hot tub water temp to my zwave micasaverde system can anyone help. I would need a temperature element that could be submerged in 104 deg f for extended period of time. I would consider bridging to another protocol.
I am using a RCTZ45 thermostat and the remote temperature sensor. I have had it working for over a year without any problems. I did have to extend the wire on the remote sensor because I wanted the thermostat in the house. If you do add extra wire make sure you re-calibrate the temp probe since extra wire may change the temp readings. The solution is a bit expensive but better than having my hot tub freeze when I’m away for extended periods during the winter.
I was also thinking of using a ST814 - Everspring ZWave Temperature and Humidity Sensor and replace the internal thermistor with the remote temperature sensor from the RCTZ45 thermostat but decided to go with the RCTZ45 because of the recalibration function.
As another option you could wire up a Fibaro Universal Binary Sensor with a DS18B20 sensor. I would use a hot glue gun to cover the sensor before using it in the hot tub. The bonus of this solution is you could use a second DS18B20 sensor to monitor the outside temperature as well.
I believe you can find the DS18B20 waterproof as well…
Does anyone know of a dealer in the US that sells the Fibaro Universal Binary Sensor? I noticed that the installation file lists three frequencies, how do you select the US frequency or is it hard wired?
I got a reply from Fibaro about a US version of the FIBARO Universal Binary Sensor FGBS-001.
Here is what they replied; “Hello. We are preparing for US market. Currently we are in FCC certification process. It should be finished in December. Few weeks after that we will start supllying US market.”
[quote=“JimMac, post:2, topic:173072”]I am using a RCTZ45 thermostat and the remote temperature sensor. I have had it working for over a year without any problems. I did have to extend the wire on the remote sensor because I wanted the thermostat in the house. If you do add extra wire make sure you re-calibrate the temp probe since extra wire may change the temp readings. The solution is a bit expensive but better than having my hot tub freeze when I’m away for extended periods during the winter.
I was also thinking of using a ST814 - Everspring ZWave Temperature and Humidity Sensor and replace the internal thermistor with the remote temperature sensor from the RCTZ45 thermostat but decided to go with the RCTZ45 because of the recalibration function.
As another option you could wire up a Fibaro Universal Binary Sensor with a DS18B20 sensor. I would use a hot glue gun to cover the sensor before using it in the hot tub. The bonus of this solution is you could use a second DS18B20 sensor to monitor the outside temperature as well.[/quote]
Which remote temperature sensor did you use with RCTZ45?
Thanks
Not certain this is a workable solution, but I’ve read that folks have integrated with Vera:
One-Wire Server
I have this unit on my build list to measure temps for things like attic, rooms, and a deep freezer.
Seems like it might make a workable solution here–especially for sensor wire length–but I’m not positive.
Thanks! It sure sounds like it would do the trick.
I use an Oregon Scientific Wireless Floating Temperature Sensor for Professional Weather Stations Model # THWR800 with the RFXCOM USB transceiver.
Doesn’t a RFXCOM USB transceiver run on European frequency?
Yes as does the sensor both are utilising 433.92. All Oregon weather sensor are compatible. There are two versions available of the RFXCOM USB but this is to cater to x10 devices in the US are on a different frequencies EU.
Which also means that I cannot interface it with my Vera (US version)…
Yes you can. This sensor does connect directly to your Vera but rather uses another device to bridge the sensor.
Check out RFXCOM USB transceiver. Have a look at RFXCOM.com or homeseer for the RFXusb transceiver and you see what capability provides establish if the cost is viable. There is already a plugin for Vera being the rfxtrx if you wish to check it out on the forum.
Thanks. So THWR800 is a sensor/transceiver, RFXrec433 is a receiver, which will be polled by Vera using a plug-in, correct?
Do I need anything to bridge Vera and RFXrec433?
Do you happen to know how often those batteries inside THWR800 have to be changed (I usually try to go with a wired solution whenever I can, 'cause batteries die quickly 
).
Thank you again
[quote=“mkaplunov, post:15, topic:173072”]Thanks. So THWR800 is a sensor/transceiver, RFXrec433 is a receiver, which will be polled by Vera using a plug-in, correct?
Do I need anything to bridge Vera and RFXrec433?
Do you happen to know how often those batteries inside THWR800 have to be changed (I usually try to go with a wired solution whenever I can, 'cause batteries die quickly ).
Thank you again[/quote]
The THWR800 is only transmits data and the RFXusb is a transceiver which is used in other cases. I can check from here but polling is I think about 10 seconds.
Bridging: No, the RFXusb plugs in to your Vera USB port and you use the plugin to set it up but updating firmware and initial set up on a computer.
Batteries: They report 12 months but my last unit last over 2 years before it was killed by one of my children throwing it hard against a tiled area several times. It was still working until then.
Yeah, they tend to break that way :-). After your previous post, I started researching THWR800 and noticed an overwhelming number of reviews complaining of internal water leaks damaging the circuitry. Have you had any of that?
No, I have not seen that but the locking mechanism (top to bottom) is a twist top which only is very small twist. So I could imagine if it wasn’t look at carefully it could happen.
Just bought this and it works great, one problem though, it reports in C in vera and I can’t figure out how to change it to F. Any ideas?
To Puck404: Could you please list things you bought to make it work?