Gate Hardware & Access Control Systems Flashcards
7 cards from real CFP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Gate Hardware & Access Control Systems flashcards as text
UL 325 is the safety standard that specifically governs:
Answer: Automatic gate operator design, construction, and installation
UL 325 is the Underwriters Laboratories standard for door, drapery, gate, louver, and window operators, establishing safety requirements for automatic gate systems.
What safety device creates an invisible beam across a gate opening and stops gate movement when an object breaks the beam?
Answer: Photo eye (photoelectric) sensor
Photo eye sensors emit an infrared beam across the gate opening; if the beam is interrupted by a person or object, the gate stops and typically reverses to prevent entrapment.
A vehicle loop detector embedded in pavement at an automated gate is primarily designed to:
Answer: Detect vehicle presence in the gate path to activate or hold the gate open
Loop detectors sense the inductance change caused by a metal vehicle, triggering the gate to open or preventing it from closing on a vehicle still in the path.
Per UL 325, what is the maximum gap dimension under a horizontal slide gate that does NOT constitute an entrapment zone?
Answer: Less than 2.25 inches
UL 325 defines a gap of less than 2.25 inches as too small for entrapment; gaps between 2.25 and 4 inches are classified as entrapment zones and require guarding or elimination.
An edge sensor (safety edge or contact sensor) mounted on an automatic gate is designed to:
Answer: Stop and reverse the gate immediately upon contact with an obstruction
Edge sensors detect physical contact with a person or object and immediately signal the operator to stop and reverse, preventing crush injuries.
Under UL 325 classifications, a Class I automatic residential gate operator is rated for:
Answer: 1 to 25 cycles per day for single-family dwellings
UL 325 Class I operators are designed for single-family residential use with up to 25 open/close cycles per day, while higher classes cover multi-family and commercial traffic levels.
A keypad entry system on an automatic gate is categorized as which type of access control?
Answer: Knowledge-based / PIN (something you know)
Keypad systems grant access based on a PIN or code that the user knows, placing them in the knowledge-based category of the three standard access control factors.