The 2159t accepts microSD cards up to 32GB.
Is there a specific or blinking icon on your screen? Are you trying to connect an outdoor sensor ?
: The device automatically saves and exits the setting mode if no buttons are pressed for several seconds. Alarm and Snooze
Whether you just unboxed your device or need to master its advanced settings, this comprehensive instructional guide covers everything you need to know. 1. Package Contents and Hardware Overview
: Activates, deactivates, and configures daily or weekday alarm settings.
