- Restricts access to record tape and time by use of a master key
- Documents each opening of a recorder by master key
with “K” imprint on tape - Documents opening and closing of recorder
with “O” imprint on tape - Registers each watchman’s ID prior to each patrol route
- Requires no regular winding
- Easy operation
- Battery indicator light
- 99 station keys available
- Self-contained dry cell battery provides months of maintenance-free operation
- Designed for maximum protection against possible mishandling
- Lightweight and easy to carry
- Lock box available to prevents loss of station keys
