RTPSLOTMPO Continue the run back to the sounder with the new spool of wire, but do not connect the wire to the sounder yet. Thus, operating the key switch will open and close the circuit in the red wire. There is an electronic switch built into the sounder. Only someone who has a key to the switch can reset the system. If you decide to mount the sounder outdoors, you must drill a hole through the wall for the wires. Decide where you want it located -- either to attract the most attention for help or to scare away an intruder.|System Of A Down