The D12C custom dual 1x2 optical switch is equivalent to two S12 single 1x2 fiber optic switches in one switch that change state together and cannot be switched independently, with 6 fibers, 2 states, and an extra path in state 1.  In state 1, input fiber 1 is connected to output fiber 6 and input fiber 4 is connected to output fiber 3. In state 2, input fiber 1 is connected to output fiber 5 and input fiber 4 is connected to output fiber 2.
 
The D12C optical switch is labeled custom because of the extra path between 5 and 2 in state 1. In many applications, this extra path has no effect and in some cases can even be used for monitoring. Since this switch has a lower cost than the D12 dual 1x2 it may be worth considering if your application can handle the extra path.
 
This non-latching version of the D12C Custom Singlemode switch requires continuous drive current and functions like a conventional relay, which may not retain state during a power loss.
 
Cables and Cable Length
   All cables are 900µm tight buffer and 1.0 meter length.  Custom lengths are available at additional cost.
 
Voltage
   Standard input voltage 5 Volts and a 50 ohm coil.  Other options are available on request.