Just wanted to pass on some info after testing Xbee’s and funnel io’s at -30degF(30 below). Had xbee 802.15.4(series 1) pro with wire and chip antenna’s installed on Funnel IO’s sitting in my vehicle with dallas one wire temp sensors for last few weeks up here in interior Alaska(powered up with cig lighter usb adaptor). All three componest worked well with no performance issues noticed.
The funnel IO’s, XBee’s and dallas one wire temp sensors saw temps last few weeks of +80degF to -30 degF 24/7 sitting in dashboard. Had an usb xbee exlorer in home so I could monitor temps and also re-uploaded programs to funnels occasionally. the distance between xbee’s in vehicle and home was approx 30M.