3) specifies the compatible holder/adapter type

Capacity: 0

The product description specifies two concrete applications for the Light and balancer rail ESD 2xM900/1800:

Specifically indicated for use with the following Weller units: WP 80

Installationstester w/RCD Type B MIL4903121111 3) specifies the compatible holder/adapterProduct Overview This handheld multifunctional installation tester, the Fluke 1663, is designed for the verification of electrical installations. The Fluke 1663 performs a range of measurements and tests specified by the manufacturer, including continuity, earth resistance, AC voltage and frequency, as well as tests of Type B residual current devices (RCDs). Features Continuity test at L N and N PE inputs. Earth resistance measurement. AC voltage and