Key features:

Mounting Type: Surface/Exposed mounting, where the entire unit (plates and armored cable) is visible on the surface of the door and frame.

Tamper Protection: The armored metal ripple tube prevents malicious cutting or damage to the power/signal wires inside. Durability: Made of durable material, often stainless steel.

Application: Suitable for various doors, including metal doors, wooden doors, fireproof doors, and glass doors, where a surface mount is acceptable or necessary.

Simple Installation: Generally easier to install than concealed models, as it does not require significant mortising (recessing) into the door and frame.