My layout will use physical panels to set turnouts, with switches, DPDT. With two wires, one for straight, one for divert (and of course the common wire). My question is: what is best in terms of reliable, fail-safe operation? A. MTS223 type (ON)-OFF-(ON) momentary with central rest or B. MTS202 type ON-ON, this is the classic up or down switch. In case A there will continually be a default 5V on both wires except when toggled for turnout action, on one of the two wires. Advantage: easy fault finding when a wire is broken or short circuited In case B there is straightforward always an opposite signal on both wires. What is preferred? And why? Thanks for your help! EDIT: the switches will not drive relays or motors or... just straight into a digital high impedance input on an electronic module.