Probably a bit larger than you're looking for but I would look at some of the microchip Bluetooth modules, particularly the rn ones. The wifi versions can be configured in timed transmission modes, I wouldn't be surprised to find the ble version does as well. On Mar 1, 2018 12:07 AM, "Harold Hallikainen" wrote: > I have an application where I'd like to have a device know if it is in > this room or that room. I'm thinking of putting a BLE beacon in each room > and use RSSI to figure out which one the receiver is closer to. It SEEMS > like there would be a standard device about the size of a large coin cell > that would transmit its ID every now and then (once every minute or two > would work for this application) and have a battery life of about 10 > years. > > Anyone familiar with such a device? > > Thanks! > > Harold > > > > -- > FCC Rules Updated Daily at http://www.hallikainen.com > Not sent from an iPhone. > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .