4000 Series 2-button audio module for IPure system including 1 integrated microphone, 1 integrated 8 Ohm / 2W speaker, 1W class D amplifier. Full-duplex audio (AEC) feature with digital noise / disturbance reduction. G711 Mu-law / A-law audio codec, Videx IPure / RTP audio protocol. Sampling frequency 8 kHz. Integrated RFID proximity reader (125 kHz; EM4100/EM4102) for use of up to 10,000 proximity keys Cod 955/T or ISO3 cards, the key configuration takes place through the PC using IPure Wizard software. Wiegand interface (34 programmable bits). IDC Connector for connection via flat cable (supplied) with other optional modules (maximum 8 modules for a total of 42 buttons). 4 LEDs for visual alert of system status; busy, call in progress, open communication and open door. Acoustic alert for the visually impaired; open communication and open door. Configurable programming of door opening time and conversation. 2 C-NO-NC Clean contact series relays (max 24VAC/DC, 2A), 2 standard programmable inputs (PTE). 1 RS-485 Bus port. Adjustable microphone and speaker levels. Blue LED information card backlighting. Microphone to be housed in the specific compartment of the module holder frames that allows for better sound output even in noisy environments, also eliminating any Larsen effect issues. Videx IPure proprietary protocol. Multi-compatibility with protocols; SIP 2.0 (UDP), 802.1x, RTP, HTTP. Satin-finished AISI 316 stainless steel plate (marine grade) that provides durability in installations subject to atmospheric agents and in the vicinity of marine environments. Vandal resistant plate with IK07 and IP65 protection rating. Operating temperature -20°/+60°C. Power PoE 802.3af (Class 0 - 12.95W) or 12VDC ± 15%/400 mA. RJ45 10/100 BASE-TX LAN Port with Auto-MDIX, CAT5 or higher recommended cable. Simplified device configuration through IPure Wizard software. Dimensions; 103x120x43mm.