We were called out to do a number of jobs for a local township. One job involved the communicating doors between their local library and the municipal building. The doors were controlled on both sides by electronic key switches working an electromagnetic lock. They did not work well and the keys were difficult. We suggested an upgrade to electronic keypads; in this case, an IEI 212i. The customer can change codes at their convenience. The remaking half of the opening is covered with a switch plate.