The most common format is the Small Format Interchangeable Core (SFIC), a standardized size across most brands. We recommend SFIC whenever possible. You may also come across Large Format (LFIC) depending on the brand and model.
Lock comes with two single pole double throw (SPDT) switches can be used as one double pole double throw (DPDT) switch. Also can use DPDT switch as SPDT leaving one pole open.
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