Atlas-Sound's VPCS Series 2 & 3-gang intercom systems (Patent applied for) provide superior intelligibility for one or two-way communication in high-security applications. Units are designed for installation in detention, correctional, and institutional facilities. VPCS intercom stations are also ideal for use in high-risk public-access spaces such as hallways, lobbies, and parking garages. Units withstand abuse, moisture, corrosion, dust, vibration, and temperature extremes from -10° to 150° F.Stations are equipped with a 2 1/2" (64mm) dia. speaker to deliver clear voice and signal transmission while the phenolic resin impregnated, moisture-proof cloth cone provides durable performance. The VPCS Series includes two die-cast baffles to protect the speaker assembly from vandalism. The Series is available with a 25-volt transformer providing 2, 1, 1/2, and 1/4 watt taps or as a 45 ohm configuration.Model numbers indicating "PB" include a vandal-proof push-button call switch for installation where call origination is a required function or a desired adjunct to security. "PB" models feature a heavy-duty, momentary action push-button with a 3A at 120 VAC/1.5A at 250 VAC contact rating, mounted to 11-gauge stainless steel face plate. The face plate mounts standard 2 & or 3-gang E.O. boxes with any counter sunk 6-32" mounting screw. Lead wires are 5" (127mm). Switch is single pole, single throw, normally open. Pushbutton assembly is constructed of nickel plated brass and sealed against moisture with a classification of 1P65.VPB-1A is a vandal-resistant pushswitch intercom accessory mounted to a single gang size stainless steel plate. Utilize assembly in conjunction with VPCS 2- and 3-gang stations or as a stand alone signaling device when a separate or remotely located call origination button is desired.