Hi recently got a WE RIA ringer as part of winning a 4A transmitter on ebay. From the pic I thought it was a electronic ringer- wrong! It weighs several pounds, and the enclosure is sealed with rivets. There is a round 4 prong jack on the bottom; similar to the kind used on some microphones. BSP and Google searches did not find any information. Was wondering if anyone had any info on this? Here is the ebay link for a pic... https://www.ebay.com/itm/251511602705?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649