Material: Made from premium materials, current connector offers durability and reliability for long term use Design: Specifically crafted for use with door access control systems, link on the door leaf and door frame without wires Suitable for Door: Tappet Contacts is suitable for all kinds of single door & double doors Feature: Applicable for door access control, ideal for electric locks, it allows the current to continue passing while the door remains closed. while protecting wires, avoiding damaging Pakage Includes: 1 set of 2 tappet contacts power transfer device, 1 for the leaf and 1 for the door frame Specification: Material: PP Maximum. Current: 5A Maximum. Voltage: 0-36VDC/VAC Size Chart: White 2 Terminals: 5.8cmx1.6cm/2.28inchx0.63inch or White 3 Terminals: about 7cm/2.76inch or Black 2 Terminals: 5.8cmx1.6cm/2.28inchx0.63inch Package Includes: 1 SetTappet Contacts Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.