These frets are to be used with the EM1 Electro-Magnetic uncoupler, installation pictures can be obtained from Gaugemaster.
Piko Coupling Adaptor for Tillig Close Coupler (2)1:120 Scale, TT120 Gauge
Hornby Lyddle End N Gauge Canal Lock lower Adaptor and upper lock adaptor
GAUGEMASTER Seep Seep Point Motor w/ Built-In Switch GMC-PM1
GAUGEMASTER Seep Seep Point Motor w/ Latching Mechanism GMC-PM4
Seep GMC-PM1 Seep Point Motor with Built-In Switch