The Sennheiser SKM 100 G4-S is a handheld wireless microphone transmitter compatible with the EM 100 G4 wireless receiver. It features an interchangeable microphone capsule design and is offered without a capsule included, so you can choose the one that best fits your application. The transmitter provides up to 8 hours of operation on two AA batteries, with a fixed 30mW RF power output and a transmission range up to 330'.

The rugged, all-metal SKM 100 G4-S features a mute function and can be locked out to prevent accidental changes during a performance. An adjustable gain allows you to set the optimal level for your voice. When the Sync function on the receiver is engaged, the transmitter and receiver quickly link to the same frequency via infrared. A backlit LCD displays essential information and provides fast menu access.

The unit can be powered via two AA batteries or a rechargeable BA 2015 Accupack battery (available separately). With the LA 2 charging adapter and the L 2015 quick-charging unit (both available separately), the Accupack can be recharged without removing it from the transmitter.

The transmitter's interchangeable capsule design allows you to use a variety of optional dynamic and condenser mic capsules, with pickup patterns ranging from wide omnidirectional to narrow supercardioid—capsules include the MMD 835, MMD 845, MME 865, MMD 935, MMD 945, and MMD 42.

The SKM 100 G4-S is backward compatible with all previous evolution systems. You can mix and match G4/G3/G2/G1 receivers or bodypack, handheld, and plug-on transmitters. It is also compatible with EW 300/500 systems.