A smart, pocket-sized, and rugged alarm transmitter designed with advanced personal safety in mind. The Ascom a51 has two programmable alarm buttons, each can be configured for a variety of responses. For extra safety, it also has a pull-cord that triggers an alarm if the handset if forcibly taken.

The Ascom a51 is also available in an “Advanced” version that adds support for “man-down” or “no-movement” detection for automated alarms location capability via infrared (IR) and low-frequency (LF) sensors. The Ascom a51 (Advanced) sends locator codes and other vital information with each triggered alarm that make it easier to determine the location of the person carrying the transmitter.