Mk Grid Plus K4898 WHI 20A SP 2Way Secret Key Switch inc Key

MK K4898WHI 20A 2 way secret light switch module grid switch + key

MK Grid Plus - K4898 WHI - 20a Two Way Key Switch Module Used

MK Grid Plus - K4898 WHI - 20a Two Way Key Switch Module Unused

MK Grid Switch 8920 WHI 20A One Way Old Style Module Used RARE 20 amp bs3676

MK Electrical 4891 WHI 1-Gang 1-Way SP 20A Switch Module (Flat Rocker) USED

MK Electrical 4891 WHI 1-Gang 1-Way SP 20A Switch Module (Curved Rocker) USED

MK Grid Plus - K4896 WHI - 20a Double Pole Switch Module Used