Lectrosonics sets a new standard for size, power, reliability and functionality with the ultra miniature SM transmitter. Not much bigger than two AA batteries, the 100 mW SM packs all user controls onto an easy to operate control panel that includes an LCD, four membrane switches for adjusting operating frequency and modulation level, plus both modulation and power indicators.

The switches can also be used to set compatibility modes, allowing the SM to work with all of Lectrosonics Digital Hybrid Wireless receivers, plus Lectrosonics 200 Series and 100 Series analog products (and even analog receivers from some other manufacturers), and Lectrosonics IFB systems.

Switching power supplies throughout the design allows nearly six hours of operation using a single AA lithium battery, or 4.5 hours with a rechargeable 2500 mAh NiMH battery. Even an alkaline AA will run for about 1.5 hours.