Tag Info

One option is using Arduino based microcontroller. I recommend JeeNode for integrated wireless. For basic one "server" plus one remote sensor you need two JeeNodes, USB adapter, temperature sensor and battery, all for around 55 €. You need to know how to solder electronic components and program in C. Each additional sensor would cost about 20 €. Here is ...

Based on my experience being qualified as a battery charging electrician on submarines and installing/upgrading/maintaining the 12v electrical system in my motorhome. Battery electrolyte specific gravity is not model or battery specific so your chart is fine. Amp-hours is a measurement of current consumed (or the sheer number of electrons you've pulled out ...

Google Power Meter is one good place to start: AlertMe makes a product for the UK market specifically. It's also possible to DIY. For 3 phase power, you'd need 3 current transformers, and then something to interface them to (an arduino may fit the bill). Note, be sure you actually have 3-phase: most residential buildings use split-phase (in which case you ...

You should check KWh meters that support the S0 interface that provides a pulse output. I have something like this http://www.produktinfo.conrad.com/datenblaetter/125000-149999/125363-an-01-ml-WechselstrZaeh_Geco32_230V32A_LCD_de_en_fr.pdf i think this one is as well able to do it ...