The bell ringer uses a cow bell to mark time for lights out at night and for wake-up in the morning.
Keep bell with you for the whole Sesshin. Note the lights out and wake-up times, as they differ for different days.
Lights out bell:
Ring gently thru through all occupied hallways
Bell should be rung vigorously up and down all occupied hallways.
Bell should be returned after the Sesshin.