# AC Sensor, Temp Sensor and Optical Sensor **URL:** \ **Category:** emonPi\ **Created:** [4 June 2018 22:45 UTC](https://community.openenergymonitor.org/t/ac-sensor-temp-sensor-and-optical-sensor/7581 "2018-06-04T22:45:49Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![Robert.Wall](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/robert.wall/32/38246_2.png) [@Robert.Wall](https://community.openenergymonitor.org/u/Robert.Wall)\ **Post date:** [4 June 2018 22:58 UTC](https://community.openenergymonitor.org/t/ac-sensor-temp-sensor-and-optical-sensor/7581/2 "2018-06-04T22:58:11Z")
> [@reynos](#): > > How about this [one](https://www.ebay.com.au/itm/9V-Power-supply-Adapter-1000mA-AC-Adapter-Buy-5-Get-6/183242570108?hash=item2aaa1bb97c:g:jXoAAOSwpDdVOt6~)? No. You require an a.c. output. That one is d.c. @dBC & @Greebo recommended this one [240VAC to 12VAC Transformers - #6 by Greebo](https://community.openenergymonitor.org/t/240vac-to-12vac-transformers/5749/6) a little while ago. > [@reynos](#): > > I have a EDMI MK7C Utility meter… The optical pulse sensor will give you an accurate pulse count of **energy** - historically, after that packet of energy has been taken. It won’t tell you the present _power_ consumption. Nor is it likely to tell you anything about exported energy. > [@reynos](#): > > a wiring diagram or pin-out The plug wiring is in the Resources section, under the emonPi heading. The pulse input is D3 (pin 6) and the temperature is D4 (pin 4). --- _[View the full topic](https://community.openenergymonitor.org/t/ac-sensor-temp-sensor-and-optical-sensor/7581)._