Milltronics
Milltronics 10E250 Airanger-DPL Board A ML5101594 PCB Rev.7 PN:24751233-00
A nice touch is that it's unthemed, so it works in both temporary and permanent setups.
MILLTRONICS 10E233-5 ML10L1329 TRANSCEIVER NSNP
What stands out about the 812-1100-S is the lack of complex programming needed.
Milltronics 10E250 Airanger-DPL Board A ML5101594 PCB Rev.3 10E250-3
What stands out about this design is the stainless steel that won't leach chemicals.