Dave Posted February 17, 2015 Share Posted February 17, 2015 Hey Engineer Type Folks, I have a power question for you. I have an idea to mount a couple of these sensors in a central location instead of putting them on each individual window or door. I chose this switch because it has a wired input on the board. I was able to pull the wires from my alarm panel and put it on this sensor and get a door to trip it. http://www.amazon.com/Ecolink-Z-Wave-Window-Sensor-DWZWAVE2-ECO/dp/B00HPIYJWU The sensor has ha 3 Volt battery. It's a CR123A Lithium battery. Naturally, if I put these all in one spot I would like to power them without batteries and then put a UPS behind that power supply. I don't know where to look in order to get started. Also, if I need to make modifications to the power supply or cut some wires I want to make the best guess possible for the first test. How many switches? I don't know yet honestly. I am having trouble finding wiring for some windows. Could be 5 to 10 sensors. Maybe I check Radio Shack on their last few days left in business? Link to comment Share on other sites More sharing options...
schoondoggy Posted February 18, 2015 Share Posted February 18, 2015 Are you thinking one power supply per sensor or running wires from sensors back to a single central supply? Link to comment Share on other sites More sharing options...
Dave Posted February 18, 2015 Author Share Posted February 18, 2015 I was hoping for a single power supply. I would run wires rudely or maybe to a wireblock mounted somehow. Link to comment Share on other sites More sharing options...
schoondoggy Posted February 18, 2015 Share Posted February 18, 2015 I am trying to find an operating current draw number to help size the PS Link to comment Share on other sites More sharing options...
schoondoggy Posted February 19, 2015 Share Posted February 19, 2015 The batteries for these are 1500mAh and they say they will last fro 3 years. so power draw would be very low. I would start with one of these: http://www.amazon.com/Ariic-BRAND-Power-adapter-supply/dp/B00IX6TSGA/ref=sr_1_3?ie=UTF8&qid=1424324611&sr=8-3&keywords=3v+power+supply If you need more power: http://www.radioshack.com/pyramid-ps3-3a-power-supply/55057675.html#.VOV61pjF_V9 and a step down converter 12v to 3v. Link to comment Share on other sites More sharing options...
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