Locking 1/4" phone jack, D-size shell, nickel metal housing and silver contacts The 3 pole phone jack panel mount version provides stable and secure connections where accidental disconnect or shock and vibration may occur. It latches with standard A-gauge mono or stereo plugs. Plug locks-in automatically when mating and unlocks only by pressing red release tab. Standard D size front panel appearance. Selectable grounding options. Features & Benefits * Securely locking chassis jack * Mates with all mono and stereo plugs specified acc. EIA RS-453 (A-gauge) * Closable grounding options: standard isolated, to get a sleeve/panel connection red isolator on lateral screw must be removed * Dimensionally compatible with D Series (31 x 26 mm) * Solder terminals