The AT-3500 Multifunction Time Recorder can be used to stamp any combination of custom message, number, date and time. Use built-in messages to stamp RCVD, SENT, FAXD and more - or, create your own text! You can also use AT-3500 as a numbering machine for up to 8-digit printing with consecutive auto-in
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So far they are working great to stamp late passes for our students in the morning. The battery function is awesome since we only need to run them for about 90 minutes a day. Thank you!