303  | TTL Pulses | 3 digit, single limit, preset counter comparator, no display | call for price |
304  | TTL Pulses | 4 digit, single limit, preset counter comparator, no display | call for price |
305  | TTL Pulses | 5 digit, single limit, preset counter comparator, no display | call for price |
323  | TTL Pulses | 3 digit, per limit, dual limit, preset counter comparator, no display | call for price |
324  | TTL Pulses | 4 digit, per limit, dual limit, preset counter comparator, no display | call for price |
563  | Parallel BCD | 3 digit, single limit, digital comparator, no display | call for price |
564  | Parallel BCD | 4 digit, single limit, digital comparator, no display | call for price |
565  | Parallel BCD | 5 digit, single limit, digital comparator, no display | call for price |
593  | Parallel BCD | 3 digit, per limit, dual limit, digital comparator, no display | call for price |
594  | Parallel BCD | 4 digit, per limit, dual limit, digital comparator, no display | call for price |