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[CBSanford]

I have installed a hot water recirculating pump that has a built-in temperature sensor. Normally, it is activated by a doorbell button or a motion sensor. It has low voltage contacts that, when closed, latch and operate the pump until the temperature sensor unlatches the contacts. To put this on a timer, then, requires a momentary switch/relay. One that, when activated, closes some contacts for a moment that would allow the pump to start without staying activated (latched). I could use the programmed scheduling for devices to operate a momentary switch and I could use the X10 remote controller to do the same, but does 10 have momentary relays/switches? And, does X10 have single button remote controllers that I can mount--like the alarm system "panic" button?

[Brian H]

The X10 Universal Module has a set of dry low voltage contacts. It can be set to momentary or continuous.
I believe the momentary is around a two second closure when an On is sent to it. Then it goes back off.
http://www.x10.com/x10-home-automation/modules/um506.html

Do you have any transceivers to receive an X10 RF command from an X10 remote?

[CBSanford]

Thank you, Brian! "Dry contact"--hunh! I guess that is the term I was looking for. It looks like the "universal remote" will do the job of turning-on the pump. At least it will save me from having to run down a flight of stairs, through the house, into the yard, and down more stairs into the basement to touch two wires together. It will also allow me to put the universal remote on as an addressed/controlled item, which I can control from my X10 master whatsit.

I have several remote controllers with lots of buttons, and I used to have a couple of key fob remotes. I would guess that I can use the key fob remotes to turn-on the pump (via the universal remote). I tried to make money by installing X10 when I was wiring for a living about 20 years ago, and I still have boxes of stuff in the shop--I just remembered the key fobs... Are they still made? Is that what you meant by a transceiver? Or, is the transceiver the "controller" that allows 4 zones to be independently switched by its interior timer or its override buttons?

[Brian H]

Transceiver is the X10 module that receives the RF signal from the Key fob or any X10 Remote and sends the command on the power lines.
X10:TM751 or RR501. The Security Consoles would also transceive RF commands.
X10Pro:PAT01 was the same as the RR501. PAT02 was the same as the TM751.
The RR501 and PAT01 are polite and will try not to step on other X10 power line signals.
TM751 PAT02 would also be fine in most cases. Especially a small setup.

[CBSanford]

Thanks, Brian, everything is sort of working... I'm going rather slowly on this remodel, but progress is being made! Okay, my desktop consoles--the ones with all the buttons and the clock that you can see--are or are not transceivers? You used the term "security console", which is a foreign term to me. Security consoles also act as transceivers (so they can receive input from unwired remote sending units?). But, my control consoles with the buttons, they just have timers in them and also allow me to manually activate, um, things.? Right?

[Brian H]

Sounds like you have a Mini-Timer.
Most likely the MT10 if it is not a recent purchase. http://www.manualslib.com/manual/338860/X10-Mt10a.html
Latest model http://kbase.x10.com/wiki/MT13A
No they are not transceivers for X10 RF commands. They can do preset timed events set in them and their local buttons can manually control X10 modules. Set the that House and Unit codes sent by the timers buttons.

If you had any security Consoles. You would probably know that. As you would have an X10 security system. Including things like door/windows sensors and security motion sensors. Besides processing the X10 RF security commands. They could also process standard X10 RF messages. For the House Code they where set to.
http://kbase.x10.com/wiki/Protector_Plus_Wireless_Voice_Dialer_Security_System
http://kbase.x10.com/wiki/SecuriLINK_Home_Security_System
http://kbase.x10.com/wiki/DS10A
http://kbase.x10.com/wiki/DS12A

[Brian H]

I maybe able to clarify some of your transceiver questions.
The X10 TM751 or X10Pro PAT02 is one commonly seen. http://kbase.x10.com/wiki/TM751
The X10 RR501 or X10Pro PAT01 was the other one commonly seen. http://kbase.x10.com/wiki/RR501

If some of your stock was from 20 years ago. You may have an older transceiver module. The module having an external metal antenna would give you an indication it is a transceiver.

X10 Keyfobs are still made. Along with the HR12A Palm Pad. Again your maybe different if you have them in stock from way back.
http://kbase.x10.com/wiki/Controllers