Question about Fluke FLK-1662 SCH Installation tester

The "SCH" after the type on the Fluke 1662 stands for a special version of the installation tester that has been adapted for the Swiss market. This version complies with Swiss standards and requirements for electrical installation testing. The "SCH" thus characterises the Swiss version of the Fluke 1662 Installation Tester. This adaptation mainly concerns conformity with national regulations and the accessories supplied, which are optimised for use in Switzerland.