A30-U3 DC Voltage Relay 6-80V48V60V 30A Detection Control Delay Switch Interval

CN101S 1 Second Interval 5V 12V 24V 110V 220V Digital LCD Timer Switch 7 Days

Intel IC- P8253-5- Programmable Interval Timer-DIP-24.

Vintage Intel D8253 Programmable Interval Timer, 8253

Lot of 3 NOS Vintage Intel IC P8254 CMOS Programmable Interval Timer 1980

Toshiba TMP82C54M-2 Programmable Interval Timer IC

1PCS MDT2020BP 8-bit micro-controller DIP28

Stanford Research Systems SR620 Universal Time Interval Counter Users Manual