# IN-Z61 pulse count interference **URL:** \ **Category:** Hardware\ **Tags:** pulsecount, gas\ **Created:** [8 September 2022 08:38 UTC](https://community.openenergymonitor.org/t/in-z61-pulse-count-interference/21264 "2022-09-08T08:38:50Z")\ **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:** [8 September 2022 13:26 UTC](https://community.openenergymonitor.org/t/in-z61-pulse-count-interference/21264/2 "2022-09-08T13:26:12Z")
Welcome, Steve, to the OEM forum. I doubt it’s a resistor you need, more likely a capacitor to short-circuit the high frequency a.c. that’s being picked up by the cables, and maybe to get rid of contact bounce too. I used a 0.1µF wired directly across the reed switch, but connecting it at the emonTx end should be OK. > [@Readings off](https://community.openenergymonitor.org/t/readings-off/20176/2): > > I had a magnetic reed switch connected to an emonTH for my gas meter, that counted approximately 2.5 per pulse. The addition of a 0.1 µF capacitor across the reed switch completely eliminated the problem. I suggested adding a note about this to the Wiki in January - it’s not happened. I also have an optical pulse sensor, but that’s connected to an emonPi; so not directly relevant. That has on occasions picked up a nearby fluorescent lamp (with a thermal starter) being switched on or off. Others… --- _[View the full topic](https://community.openenergymonitor.org/t/in-z61-pulse-count-interference/21264)._