Sennheiser 3000 series Instruction Manual page 3

Intro & Overview
The 3000 series of Radio Mic equipment is used in West End Theatre
productions, by Broadcasters, and those users looking for that extra quality
that is inherent in Sennheiser's more expensive systems.
The EM 3032 dual receivers allow the user to the system. Output
level adjustment, squelch control and a comprehensive LCD display are
there for the experienced user. A headphone socket per channel is a handy
facility for all users.
Metal casings are used throughout the range giving an improved RF
performance, and a greater robustness.
Where transmitter size is important we have the SK5012, which is much
smaller than the SK50/SK3063 pocket packs. There is a small cost for the
reduction in size, and the SK5012 does not indicate battery life on the
receiver as do all the other transmitters.
This guide has been written to assist the user who is new to this system to
get the result they are looking for with the minimum of time and worry. It
will also aid the experienced user whose memory needs a little help!
Fault finding is never easy, especially when you are under pressure. We
have added a section that may just save your reputation (and sanity)!