There are 2 wires come out from the coin controller box, this recommended solution.
A door switch is a simple on/off mechanism that prohibits the dryer from operating when the door is open. Dryer door switches are a little over an inch long. Many are white in color and all have metal prongs, called terminals, extending out from the body of the switch.Some door switches have only two metal prongs extending from the body, while others have three. Those with three terminals will have a common (COM) terminal, a normally closed (N.C.) terminal, and a normally open (N.O.) terminal. Those switches with only two terminals will have either a common terminal and a normally open terminal, or a common terminal and a normally closed terminal. Find the wire connects to COM terminal PIN and then cut it in somewhere and then connect the 2 wires from the coin controller box.Locate your dryer's door switch.
Please also make sure use the same power rated wires as or higher power rated wires than the Dryer's or Washer's door switches' wires if they are different.
3. Multi Currency Coin Acceptor.
Can be reprogram up to 5 of any countries' coin currency or tokens by owner
4. Minimum charge.
5. Top, bottom screw mounting holes for security
6 Very strong heavy duty metal case with locked cash draw
7 Auditing total money counter.
Owner can press a setting button inside the case to get total money count, which could not be reset. preventing money stealing by employee.
8. Alarm will sound and LED will flash in the last minute
9. Include Switch Power Adapter PA-12, 110VAC-240VAC input, power surge protection
10. Metal Coin Box about 11" X 5" X 4 3/4"
11. Easy to use for customers: like payphone
Check website for how to wire dryer and Breaker Panel