The original TK1 relay was manufactured by Panasonic, a relay which became a popular small signal relay. This relay has not been manufactured for several years. it is obsolete and very difficult to source.
The original datasheet for the Panasonic TK1 relay is available to be downloaded below.
Originally manufactured in coil voltages ranging from 1.5V to 24V dc, the most popular coil voltages used at the time in the telecomms and control industries were 5V, 12V and 24V
The Cephos C-TK1 relay module is a drop-in replacement for this obsolete Panasonic TK1 relay
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