I’ll chime in here too as I am interested in an answer. I’ve tested Particle Electrons too and confirmed their overhead with UDP is about 65 bytes (plus 61 bytes for an ACK, which can be disabled). Their doc: https://docs.particle.io/guide/getting-started/data/electron/ Dash apparently does not use UDP: How do you compare vs the Particle Electron? - #8 by benstr. I’m still looking for similar documentation for Dash. @ryanHologram? @benstr? Thx.