The SWP-Latch is a switch plate with a latching switch finished in low reflective black. The robust switch plate has a latching switch that is able to be be wired for normally open or normally closed operation. Switch plate contains a 3 leg bi-colour LED indicator for visual status of microphone. LED requires a separate supply ( 2.5 Volt / 30mA).. Its design is such that it can be used in conjunction with CLOCKAUDIO C 011E-RF, C 012E-RF, C 003E, C 003E-RF, C 004E, C 004E-RF and SM 20-RF products.